CWE-248
AllowedUncaught Exception
Abstraction: Base · Status: Draft
An exception is thrown from a function, but it is not caught.
528 vulnerabilities reference this CWE, most recent first.
GHSA-FJGF-RC76-4X9P
Vulnerability from github – Published: 2025-07-17 21:01 – Updated: 2025-07-17 21:01Impact
A vulnerability in Multer versions >= 1.4.4-lts.1, < 2.0.2 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed request. This request causes an unhandled exception, leading to a crash of the process.
Patches
Users should upgrade to 2.0.2
Workarounds
None
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "multer"
},
"ranges": [
{
"events": [
{
"introduced": "1.4.4-lts.1"
},
{
"fixed": "2.0.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-7338"
],
"database_specific": {
"cwe_ids": [
"CWE-248"
],
"github_reviewed": true,
"github_reviewed_at": "2025-07-17T21:01:54Z",
"nvd_published_at": "2025-07-17T16:15:35Z",
"severity": "HIGH"
},
"details": "### Impact\n\nA vulnerability in Multer versions \u003e= 1.4.4-lts.1, \u003c 2.0.2 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed request. This request causes an unhandled exception, leading to a crash of the process.\n\n### Patches\n\nUsers should upgrade to `2.0.2`\n\n### Workarounds\n\nNone",
"id": "GHSA-fjgf-rc76-4x9p",
"modified": "2025-07-17T21:01:54Z",
"published": "2025-07-17T21:01:54Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/expressjs/multer/security/advisories/GHSA-fjgf-rc76-4x9p"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7338"
},
{
"type": "WEB",
"url": "https://github.com/expressjs/multer/commit/adfeaf669f0e7fe953eab191a762164a452d143b"
},
{
"type": "WEB",
"url": "https://cna.openjsf.org/security-advisories.html"
},
{
"type": "PACKAGE",
"url": "https://github.com/expressjs/multer"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Multer vulnerable to Denial of Service via unhandled exception from malformed request"
}
GHSA-FVPC-GQMR-784W
Vulnerability from github – Published: 2025-04-15 15:30 – Updated: 2025-04-15 15:30The vulnerability allows any authenticated user to cause the PeerTube server to stop functioning in a persistent manner. If user import is enabled (which is the default setting), any registered user can upload an archive for importing. The code uses the yauzl library for reading the archive. If the yauzl library encounters a filename that is considered illegal, it raises an exception that is uncaught by PeerTube, leading to a crash which repeats infinitely on startup.
{
"affected": [],
"aliases": [
"CVE-2025-32944"
],
"database_specific": {
"cwe_ids": [
"CWE-248"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-15T13:15:55Z",
"severity": "MODERATE"
},
"details": "The vulnerability allows any authenticated user to cause the PeerTube server to stop functioning in a persistent manner.\u00a0\u00a0If user import is enabled (which is the default setting), any registered user can upload an archive for importing. The code uses the yauzl library for reading the archive. If the yauzl library encounters a filename that is considered illegal, it raises an exception that is uncaught by PeerTube, leading to a crash which repeats infinitely on startup.",
"id": "GHSA-fvpc-gqmr-784w",
"modified": "2025-04-15T15:30:53Z",
"published": "2025-04-15T15:30:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-32944"
},
{
"type": "WEB",
"url": "https://github.com/Chocobozzz/PeerTube/releases/tag/v7.1.1"
},
{
"type": "WEB",
"url": "https://research.jfrog.com/vulnerabilities/peertube-archive-persistent-dos"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FW4P-36J9-RRJ3
Vulnerability from github – Published: 2020-09-03 20:25 – Updated: 2020-08-31 18:48Versions of sequelize prior to 4.44.4 are vulnerable to Denial of Service (DoS). The SQLite dialect fails to catch a TypeError exception for the results variable. The results value may be undefined and trigger the error on a .map call. This may allow attackers to submit malicious input that forces the exception and crashes the Node process.
The following proof-of-concept crashes the Node process:
const Sequelize = require('sequelize');
const sequelize = new Sequelize({
dialect: 'sqlite',
storage: 'database.sqlite'
});
const TypeError = sequelize.define('TypeError', {
name: Sequelize.STRING,
});
TypeError.sync({force: true}).then(() => {
return TypeError.create({name: "SELECT tbl_name FROM sqlite_master"});
});
Recommendation
Upgrade to version 4.44.4 or later.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "sequelize"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.44.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-248"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:48:48Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "Versions of `sequelize` prior to 4.44.4 are vulnerable to Denial of Service (DoS). The SQLite dialect fails to catch a `TypeError` exception for the `results` variable. The `results` value may be undefined and trigger the error on a `.map` call. This may allow attackers to submit malicious input that forces the exception and crashes the Node process. \n\nThe following proof-of-concept crashes the Node process: \n```\nconst Sequelize = require(\u0027sequelize\u0027);\n\nconst sequelize = new Sequelize({\n\tdialect: \u0027sqlite\u0027,\n\tstorage: \u0027database.sqlite\u0027\n});\n\nconst TypeError = sequelize.define(\u0027TypeError\u0027, {\n\tname: Sequelize.STRING,\n});\n\nTypeError.sync({force: true}).then(() =\u003e {\n\treturn TypeError.create({name: \"SELECT tbl_name FROM sqlite_master\"});\n});\n```\n\n\n## Recommendation\n\nUpgrade to version 4.44.4 or later.",
"id": "GHSA-fw4p-36j9-rrj3",
"modified": "2020-08-31T18:48:48Z",
"published": "2020-09-03T20:25:33Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/sequelize/sequelize/pull/11877"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/1142"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "Denial of Service in sequelize"
}
GHSA-FWMP-GXJ5-29MJ
Vulnerability from github – Published: 2026-08-22 00:31 – Updated: 2026-08-27 21:31Tie::Hash::Regex versions before 2.0.0 for Perl will throw an exception on unparseable lookup keys.
The FETCH, EXISTS and DELETE methods throw an exception when on malformed regular expressions.
Each method falls back to a regex match when the key is not already stored in the hash, compiling the caller's key with a bare qr// and no eval guard. A key that is not a valid regular expression pattern, such as a single unmatched bracket, dies.
An application that looks up externally supplied strings in a tied hash will die on an invalid key.
{
"affected": [],
"aliases": [
"CVE-2026-77781"
],
"database_specific": {
"cwe_ids": [
"CWE-248"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-22T00:16:46Z",
"severity": "HIGH"
},
"details": "Tie::Hash::Regex versions before 2.0.0 for Perl will throw an exception on unparseable lookup keys.\n\nThe FETCH, EXISTS and DELETE methods throw an exception when on malformed regular expressions.\n\nEach method falls back to a regex match when the key is not already stored in the hash, compiling the caller\u0027s key with a bare qr// and no eval guard. A key that is not a valid regular expression pattern, such as a single unmatched bracket, dies.\n\nAn application that looks up externally supplied strings in a tied hash will die on an invalid key.",
"id": "GHSA-fwmp-gxj5-29mj",
"modified": "2026-08-27T21:31:21Z",
"published": "2026-08-22T00:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77781"
},
{
"type": "WEB",
"url": "https://github.com/davorg-cpan/tie-hash-regex/commit/4239732cb76233543e2ded8ff5e0f238af152e0c.patch"
},
{
"type": "WEB",
"url": "https://metacpan.org/release/DAVECROSS/Tie-Hash-Regex-2.0.0/source/Changes"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/08/22/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FX36-2W4H-PGPF
Vulnerability from github – Published: 2024-11-05 12:31 – Updated: 2024-11-05 12:31Vulnerability of message types not being verified in the advanced messaging modul Impact: Successful exploitation of this vulnerability may affect availability.
{
"affected": [],
"aliases": [
"CVE-2024-51518"
],
"database_specific": {
"cwe_ids": [
"CWE-248"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-05T10:21:10Z",
"severity": "MODERATE"
},
"details": "Vulnerability of message types not being verified in the advanced messaging modul\nImpact: Successful exploitation of this vulnerability may affect availability.",
"id": "GHSA-fx36-2w4h-pgpf",
"modified": "2024-11-05T12:31:03Z",
"published": "2024-11-05T12:31:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-51518"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletin/2024/11"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-FX5J-QCQG-GRPF
Vulnerability from github – Published: 2026-09-10 15:08 – Updated: 2026-09-10 15:08Negative shared-string index causes panic in GetCellValue and GetRows
Summary
Excelize parses shared-string cell values with strconv.Atoi and checks only the upper bound before indexing the shared string slice. If an XLSX file contains a shared-string cell with <v>-1</v>, the parsed index is negative. The upper-bound check still passes (len(sharedStrings) > -1), and Excelize indexes sharedStrings[-1], causing a runtime panic.
This was reproduced on the current default branch commit 1213a8bd7c5ab360554603ac5c995ccaf6eb4314 and the latest release tag v2.10.1 (5ad5ab3af0054c55bdce09f1530085600e9f2e45). The issue is independent from the row-bound allocation report, so I am reporting it separately.
Affected package
- Package:
github.com/xuri/excelize/v2 - Tested affected versions: current default branch at
1213a8bd7c5ab360554603ac5c995ccaf6eb4314, and releasev2.10.1 - Fixed version: none known at the time of this report
Impact
An attacker who can provide an XLSX file to an application using Excelize can trigger a process panic when the application reads the malicious cell through common APIs such as GetCellValue or GetRows. In services that parse untrusted spreadsheets without a panic recovery boundary, this can cause denial of service.
Root cause
For shared-string cells (t="s"), xlsxC.getValueFrom() parses the cell value as a shared-string index and only checks whether the index is below len(d.SI) before indexing:
xlsxSI, _ := strconv.Atoi(strings.TrimSpace(c.V))
if len(d.SI) > xlsxSI {
return d.SI[xlsxSI].String(), nil
}
For xlsxSI == -1, len(d.SI) > -1 is true, so the code proceeds to index d.SI[-1] and panics.
Minimal worksheet payload
<?xml version="1.0" encoding="UTF-8"?>
<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
<sheetData>
<row r="1"><c r="A1" t="s"><v>-1</v></c></row>
</sheetData>
</worksheet>
The workbook also contains a normal sharedStrings.xml with one string (ok), so the failure is specifically due to accepting a negative index.
Reproduction
Calling GetCellValue("Sheet1", "A1") on the workbook panics:
== negative shared string GetCellValue ==
elapsed=0s alloc_delta=0MB
PANIC: runtime.boundsError runtime error: index out of range [-1]
Calling GetRows("Sheet1") on the same workbook also panics:
== negative shared string GetRows ==
elapsed=0s alloc_delta=0MB
PANIC: runtime.boundsError runtime error: index out of range [-1]
The same results were observed on current default branch commit 1213a8bd7c5ab360554603ac5c995ccaf6eb4314 and on release v2.10.1.
Expected behavior
Malformed shared-string indices should be rejected or treated as missing/invalid string references without panicking.
Suggested remediation
Check both lower and upper bounds before indexing the shared string table. For example:
if xlsxSI >= 0 && xlsxSI < len(d.SI) {
return d.SI[xlsxSI].String(), nil
}
Add regression tests for GetCellValue() and GetRows() on t="s" cells whose <v> value is negative.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/xuri/excelize/v2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.11.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/xuri/excelize"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.4.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-59162"
],
"database_specific": {
"cwe_ids": [
"CWE-248",
"CWE-755"
],
"github_reviewed": true,
"github_reviewed_at": "2026-09-10T15:08:53Z",
"nvd_published_at": "2026-07-10T17:17:02Z",
"severity": "MODERATE"
},
"details": "# Negative shared-string index causes panic in GetCellValue and GetRows\n\n## Summary\n\nExcelize parses shared-string cell values with `strconv.Atoi` and checks only the upper bound before indexing the shared string slice. If an XLSX file contains a shared-string cell with `\u003cv\u003e-1\u003c/v\u003e`, the parsed index is negative. The upper-bound check still passes (`len(sharedStrings) \u003e -1`), and Excelize indexes `sharedStrings[-1]`, causing a runtime panic.\n\nThis was reproduced on the current default branch commit `1213a8bd7c5ab360554603ac5c995ccaf6eb4314` and the latest release tag `v2.10.1` (`5ad5ab3af0054c55bdce09f1530085600e9f2e45`). The issue is independent from the row-bound allocation report, so I am reporting it separately.\n\n## Affected package\n\n- Package: `github.com/xuri/excelize/v2`\n- Tested affected versions: current default branch at `1213a8bd7c5ab360554603ac5c995ccaf6eb4314`, and release `v2.10.1`\n- Fixed version: none known at the time of this report\n\n## Impact\n\nAn attacker who can provide an XLSX file to an application using Excelize can trigger a process panic when the application reads the malicious cell through common APIs such as `GetCellValue` or `GetRows`. In services that parse untrusted spreadsheets without a panic recovery boundary, this can cause denial of service.\n\n## Root cause\n\nFor shared-string cells (`t=\"s\"`), `xlsxC.getValueFrom()` parses the cell value as a shared-string index and only checks whether the index is below `len(d.SI)` before indexing:\n\n```go\nxlsxSI, _ := strconv.Atoi(strings.TrimSpace(c.V))\nif len(d.SI) \u003e xlsxSI {\n return d.SI[xlsxSI].String(), nil\n}\n```\n\nFor `xlsxSI == -1`, `len(d.SI) \u003e -1` is true, so the code proceeds to index `d.SI[-1]` and panics.\n\n## Minimal worksheet payload\n\n```xml\n\u003c?xml version=\"1.0\" encoding=\"UTF-8\"?\u003e\n\u003cworksheet xmlns=\"http://schemas.openxmlformats.org/spreadsheetml/2006/main\"\u003e\n \u003csheetData\u003e\n \u003crow r=\"1\"\u003e\u003cc r=\"A1\" t=\"s\"\u003e\u003cv\u003e-1\u003c/v\u003e\u003c/c\u003e\u003c/row\u003e\n \u003c/sheetData\u003e\n\u003c/worksheet\u003e\n```\n\nThe workbook also contains a normal `sharedStrings.xml` with one string (`ok`), so the failure is specifically due to accepting a negative index.\n\n## Reproduction\n\nCalling `GetCellValue(\"Sheet1\", \"A1\")` on the workbook panics:\n\n```text\n== negative shared string GetCellValue ==\nelapsed=0s alloc_delta=0MB\nPANIC: runtime.boundsError runtime error: index out of range [-1]\n```\n\nCalling `GetRows(\"Sheet1\")` on the same workbook also panics:\n\n```text\n== negative shared string GetRows ==\nelapsed=0s alloc_delta=0MB\nPANIC: runtime.boundsError runtime error: index out of range [-1]\n```\n\nThe same results were observed on current default branch commit `1213a8bd7c5ab360554603ac5c995ccaf6eb4314` and on release `v2.10.1`.\n\n## Expected behavior\n\nMalformed shared-string indices should be rejected or treated as missing/invalid string references without panicking.\n\n## Suggested remediation\n\nCheck both lower and upper bounds before indexing the shared string table. For example:\n\n```go\nif xlsxSI \u003e= 0 \u0026\u0026 xlsxSI \u003c len(d.SI) {\n return d.SI[xlsxSI].String(), nil\n}\n```\n\nAdd regression tests for `GetCellValue()` and `GetRows()` on `t=\"s\"` cells whose `\u003cv\u003e` value is negative.",
"id": "GHSA-fx5j-qcqg-grpf",
"modified": "2026-09-10T15:08:53Z",
"published": "2026-09-10T15:08:53Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/qax-os/excelize/security/advisories/GHSA-fx5j-qcqg-grpf"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59162"
},
{
"type": "WEB",
"url": "https://github.com/qax-os/excelize/pull/2331"
},
{
"type": "WEB",
"url": "https://github.com/qax-os/excelize/commit/93f0b3caed37f21ef5079e3259c6c21dcfe68453"
},
{
"type": "PACKAGE",
"url": "https://github.com/qax-os/excelize"
},
{
"type": "WEB",
"url": "https://github.com/qax-os/excelize/releases/tag/v2.11.0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Excelize: Negative shared-string index causes panic in GetCellValue and GetRows"
}
GHSA-G2M5-4HX7-HX76
Vulnerability from github – Published: 2025-02-06 21:32 – Updated: 2025-02-06 21:32Specifically crafted payloads sent to the RFID reader could cause DoS of RFID reader. After the device is restarted, it gets back to fully working state.
{
"affected": [],
"aliases": [
"CVE-2024-13417"
],
"database_specific": {
"cwe_ids": [
"CWE-248"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-06T20:15:39Z",
"severity": "MODERATE"
},
"details": "Specifically crafted payloads sent to the RFID reader could cause DoS of RFID reader. After the device is restarted, it gets back to fully working state.",
"id": "GHSA-g2m5-4hx7-hx76",
"modified": "2025-02-06T21:32:09Z",
"published": "2025-02-06T21:32:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-13417"
},
{
"type": "WEB",
"url": "https://www.2n.com/en-GB/download/cve_2024_1341x_2nos_2_46_v1pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-G4W4-PWM7-7RV4
Vulnerability from github – Published: 2023-06-27 15:30 – Updated: 2026-02-23 09:31Unchecked parameter value in M-Files Server in versions before 23.6.12695.3 (excluding 23.2 SR2 and newer) allows anonymous user to cause denial of service
{
"affected": [],
"aliases": [
"CVE-2023-3405"
],
"database_specific": {
"cwe_ids": [
"CWE-248"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-06-27T15:15:11Z",
"severity": "HIGH"
},
"details": "Unchecked parameter value in M-Files Server in versions before 23.6.12695.3 (excluding 23.2 SR2 and newer) allows anonymous user to cause denial of service",
"id": "GHSA-g4w4-pwm7-7rv4",
"modified": "2026-02-23T09:31:18Z",
"published": "2023-06-27T15:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3405"
},
{
"type": "WEB",
"url": "https://empower.m-files.com/security-advisories/CVE-2023-3405"
},
{
"type": "WEB",
"url": "https://product.m-files.com/security-advisories/cve-2023-3405"
},
{
"type": "WEB",
"url": "https://www.m-files.com/about/trust-center/security-advisories/cve-2023-3405"
},
{
"type": "WEB",
"url": "https://www.m-files.com/about/trust-center/security-advisories/cve-2023-3405-denial-of-service-in-m-files-server"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-G5HG-P3PH-G8QG
Vulnerability from github – Published: 2025-06-05 01:09 – Updated: 2025-06-05 01:09Impact
A vulnerability in Multer versions >=1.4.4-lts.1, <2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process.
Patches
Users should upgrade to 2.0.1
Workarounds
None
References
https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9 https://github.com/expressjs/multer/issues/1233 https://github.com/expressjs/multer/pull/1256
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "multer"
},
"ranges": [
{
"events": [
{
"introduced": "1.4.4-lts.1"
},
{
"fixed": "2.0.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-48997"
],
"database_specific": {
"cwe_ids": [
"CWE-248"
],
"github_reviewed": true,
"github_reviewed_at": "2025-06-05T01:09:35Z",
"nvd_published_at": "2025-06-03T19:15:39Z",
"severity": "HIGH"
},
"details": "### Impact\n\nA vulnerability in Multer versions \u003e=1.4.4-lts.1, \u003c2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process.\n\n### Patches\n\nUsers should upgrade to `2.0.1`\n\n### Workarounds\n\nNone\n\n### References\n\nhttps://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9\nhttps://github.com/expressjs/multer/issues/1233\nhttps://github.com/expressjs/multer/pull/1256",
"id": "GHSA-g5hg-p3ph-g8qg",
"modified": "2025-06-05T01:09:35Z",
"published": "2025-06-05T01:09:35Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/expressjs/multer/security/advisories/GHSA-g5hg-p3ph-g8qg"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48997"
},
{
"type": "WEB",
"url": "https://github.com/expressjs/multer/issues/1233"
},
{
"type": "WEB",
"url": "https://github.com/expressjs/multer/pull/1256"
},
{
"type": "WEB",
"url": "https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9"
},
{
"type": "PACKAGE",
"url": "https://github.com/expressjs/multer"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Multer vulnerable to Denial of Service via unhandled exception"
}
GHSA-G77H-45RF-HCX4
Vulnerability from github – Published: 2026-07-17 20:19 – Updated: 2026-07-17 20:19Summary
ExifReader 4.40.0 can throw an uncaught RangeError: Offset is outside the bounds of the DataView while parsing crafted HEIC/AVIF files. The file only needs a valid leading ftyp box with a HEIC/AVIF major brand followed by a malformed ISO-BMFF box, such as an empty 8-byte free box or a truncated extended-size box.
This is reachable through the public ExifReader.load() API for in-memory buffers and through the async file/URL loaders when an application parses attacker-supplied images. In applications that do not wrap every parse in a defensive try/catch, a single uploaded or fetched image can abort the request/worker and cause a denial of service.
Credit requested: Yaohui Wang.
Affected version tested
- npm package:
exifreader - Version:
4.40.0 - Repository commit tested:
8cb0261a26b7d986955fe0a6780f076dcb7902e7
Root cause
The ISO-BMFF parser assumes that every top-level box with at least an 8-byte header also has enough bytes for the fields required by its parsed form. In src/image-header-iso-bmff.js:
findMetaBox()callsparseBox(dataView, offset)while only checking thatoffset + 8 <= dataView.byteLength.parseBox()callsgetBoxLength()and then unconditionally reads fields such as the full-box version byte formeta/iloc/iinf/idatboxes.getBoxLength()handlesboxLength === 1by callinghasEmptyHighBits(dataView, offset), which readsdataView.getUint32(offset + 8)without first checking that the 64-bit extended size field is present.
As a result, syntactically small or truncated boxes after a valid HEIC/AVIF ftyp box escape the format-detection catch blocks and throw from the main parsing path.
Reproduction
Run this from the repository root against the committed dist/exif-reader.js bundle:
const ExifReader = require('./dist/exif-reader.js');
function u32be(n) {
return [(n >>> 24) & 255, (n >>> 16) & 255, (n >>> 8) & 255, n & 255];
}
function ascii(s) {
return Array.from(Buffer.from(s, 'ascii'));
}
function box(type, content = []) {
return [...u32be(8 + content.length), ...ascii(type), ...content];
}
for (const brand of ['heic', 'avif']) {
for (const badBox of ['free', 'abcd']) {
const bytes = Uint8Array.from([
...box('ftyp', ascii(brand)),
...box(badBox), // 8-byte box header with no content
]);
try {
ExifReader.load(bytes.buffer);
console.log(`${brand}/${badBox}: no throw`);
} catch (e) {
console.log(`${brand}/${badBox}: ${e.name}: ${e.message}`);
console.log(String(e.stack).split('\n').slice(0, 6).join('\n'));
}
}
}
Observed output on Node v23.11.0 with ExifReader 4.40.0:
heic/free: RangeError: Offset is outside the bounds of the DataView
RangeError: Offset is outside the bounds of the DataView
at DataView.prototype.getUint8 (<anonymous>)
at parseBox (.../dist/exif-reader.js:1:16513)
at findMetaBox (.../dist/exif-reader.js:1:19032)
at findOffsets (.../dist/exif-reader.js:1:19101)
heic/abcd: RangeError: Offset is outside the bounds of the DataView
avif/free: RangeError: Offset is outside the bounds of the DataView
avif/abcd: RangeError: Offset is outside the bounds of the DataView
A second variant triggers the extended-size path:
const truncatedExtendedBox = [...u32be(1), ...ascii('free')];
const heic = Uint8Array.from([...box('ftyp', ascii('heic')), ...truncatedExtendedBox]);
ExifReader.load(heic.buffer);
That throws from hasEmptyHighBits() / getBoxLength() because the extended-size high/low fields are not present.
Expected behavior
Malformed/truncated metadata boxes should be handled like other malformed metadata in the project: return only the successfully parsed file type/metadata, return no app markers, or throw a controlled project-specific error. A safe JavaScript bounds error should not escape from the parser for an attacker-controlled image container.
Security impact
This is a denial-of-service issue for services that parse user-provided HEIC/AVIF files with ExifReader. A minimal attacker-controlled image buffer can cause an unhandled exception in the parser and abort the surrounding request/worker if the embedding application does not catch every parse error.
Suggested severity: Medium. Suggested CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Suggested fix
Add explicit bounds checks before every DataView read in the ISO-BMFF box parser, especially:
- before reading the 64-bit extended size fields in
getBoxLength(); - before reading the full-box version byte in
parseBox(); - before descending into
parseSubBoxes()when a declared box length exceeds available bytes; - ensure
findMetaBox()breaks on boxes whose declared length is invalid or not fully present.
A regression test should cover ftyp/heic and ftyp/avif followed by an 8-byte empty free/unknown box and by a truncated extended-size box.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.40.0"
},
"package": {
"ecosystem": "npm",
"name": "exifreader"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.40.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-53496"
],
"database_specific": {
"cwe_ids": [
"CWE-248",
"CWE-755"
],
"github_reviewed": true,
"github_reviewed_at": "2026-07-17T20:19:39Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "## Summary\n\nExifReader 4.40.0 can throw an uncaught `RangeError: Offset is outside the bounds of the DataView` while parsing crafted HEIC/AVIF files. The file only needs a valid leading `ftyp` box with a HEIC/AVIF major brand followed by a malformed ISO-BMFF box, such as an empty 8-byte `free` box or a truncated extended-size box.\n\nThis is reachable through the public `ExifReader.load()` API for in-memory buffers and through the async file/URL loaders when an application parses attacker-supplied images. In applications that do not wrap every parse in a defensive try/catch, a single uploaded or fetched image can abort the request/worker and cause a denial of service.\n\nCredit requested: Yaohui Wang.\n\n## Affected version tested\n\n- npm package: `exifreader`\n- Version: `4.40.0`\n- Repository commit tested: `8cb0261a26b7d986955fe0a6780f076dcb7902e7`\n\n## Root cause\n\nThe ISO-BMFF parser assumes that every top-level box with at least an 8-byte header also has enough bytes for the fields required by its parsed form. In `src/image-header-iso-bmff.js`:\n\n- `findMetaBox()` calls `parseBox(dataView, offset)` while only checking that `offset + 8 \u003c= dataView.byteLength`.\n- `parseBox()` calls `getBoxLength()` and then unconditionally reads fields such as the full-box version byte for `meta`/`iloc`/`iinf`/`idat` boxes.\n- `getBoxLength()` handles `boxLength === 1` by calling `hasEmptyHighBits(dataView, offset)`, which reads `dataView.getUint32(offset + 8)` without first checking that the 64-bit extended size field is present.\n\nAs a result, syntactically small or truncated boxes after a valid HEIC/AVIF `ftyp` box escape the format-detection catch blocks and throw from the main parsing path.\n\n## Reproduction\n\nRun this from the repository root against the committed `dist/exif-reader.js` bundle:\n\n```js\nconst ExifReader = require(\u0027./dist/exif-reader.js\u0027);\n\nfunction u32be(n) {\n return [(n \u003e\u003e\u003e 24) \u0026 255, (n \u003e\u003e\u003e 16) \u0026 255, (n \u003e\u003e\u003e 8) \u0026 255, n \u0026 255];\n}\nfunction ascii(s) {\n return Array.from(Buffer.from(s, \u0027ascii\u0027));\n}\nfunction box(type, content = []) {\n return [...u32be(8 + content.length), ...ascii(type), ...content];\n}\n\nfor (const brand of [\u0027heic\u0027, \u0027avif\u0027]) {\n for (const badBox of [\u0027free\u0027, \u0027abcd\u0027]) {\n const bytes = Uint8Array.from([\n ...box(\u0027ftyp\u0027, ascii(brand)),\n ...box(badBox), // 8-byte box header with no content\n ]);\n\n try {\n ExifReader.load(bytes.buffer);\n console.log(`${brand}/${badBox}: no throw`);\n } catch (e) {\n console.log(`${brand}/${badBox}: ${e.name}: ${e.message}`);\n console.log(String(e.stack).split(\u0027\\n\u0027).slice(0, 6).join(\u0027\\n\u0027));\n }\n }\n}\n```\n\nObserved output on Node v23.11.0 with ExifReader 4.40.0:\n\n```text\nheic/free: RangeError: Offset is outside the bounds of the DataView\nRangeError: Offset is outside the bounds of the DataView\n at DataView.prototype.getUint8 (\u003canonymous\u003e)\n at parseBox (.../dist/exif-reader.js:1:16513)\n at findMetaBox (.../dist/exif-reader.js:1:19032)\n at findOffsets (.../dist/exif-reader.js:1:19101)\n\nheic/abcd: RangeError: Offset is outside the bounds of the DataView\navif/free: RangeError: Offset is outside the bounds of the DataView\navif/abcd: RangeError: Offset is outside the bounds of the DataView\n```\n\nA second variant triggers the extended-size path:\n\n```js\nconst truncatedExtendedBox = [...u32be(1), ...ascii(\u0027free\u0027)];\nconst heic = Uint8Array.from([...box(\u0027ftyp\u0027, ascii(\u0027heic\u0027)), ...truncatedExtendedBox]);\nExifReader.load(heic.buffer);\n```\n\nThat throws from `hasEmptyHighBits()` / `getBoxLength()` because the extended-size high/low fields are not present.\n\n## Expected behavior\n\nMalformed/truncated metadata boxes should be handled like other malformed metadata in the project: return only the successfully parsed file type/metadata, return no app markers, or throw a controlled project-specific error. A safe JavaScript bounds error should not escape from the parser for an attacker-controlled image container.\n\n## Security impact\n\nThis is a denial-of-service issue for services that parse user-provided HEIC/AVIF files with ExifReader. A minimal attacker-controlled image buffer can cause an unhandled exception in the parser and abort the surrounding request/worker if the embedding application does not catch every parse error.\n\nSuggested severity: Medium. Suggested CVSS: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`.\n\n## Suggested fix\n\nAdd explicit bounds checks before every `DataView` read in the ISO-BMFF box parser, especially:\n\n- before reading the 64-bit extended size fields in `getBoxLength()`;\n- before reading the full-box version byte in `parseBox()`;\n- before descending into `parseSubBoxes()` when a declared box length exceeds available bytes;\n- ensure `findMetaBox()` breaks on boxes whose declared length is invalid or not fully present.\n\nA regression test should cover `ftyp/heic` and `ftyp/avif` followed by an 8-byte empty `free`/unknown box and by a truncated extended-size box.",
"id": "GHSA-g77h-45rf-hcx4",
"modified": "2026-07-17T20:19:39Z",
"published": "2026-07-17T20:19:39Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/mattiasw/ExifReader/security/advisories/GHSA-g77h-45rf-hcx4"
},
{
"type": "PACKAGE",
"url": "https://github.com/mattiasw/ExifReader"
},
{
"type": "WEB",
"url": "https://github.com/mattiasw/ExifReader/releases/tag/v4.40.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "ExifReader HEIC/AVIF ISO-BMFF parser throws uncaught RangeError on truncated boxes"
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.