CWE-269
DiscouragedImproper Privilege Management
Abstraction: Class · Status: Draft
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
5480 vulnerabilities reference this CWE, most recent first.
GHSA-R3MC-836C-4X5X
Vulnerability from github – Published: 2022-05-24 17:16 – Updated: 2022-05-24 17:16A potential security vulnerability has been identified in the disk drive firmware installers named Supplemental Update / Online ROM Flash Component on HPE servers running Linux. The vulnerable software is included in the HPE Service Pack for ProLiant (SPP) releases 2018.06.0, 2018.09.0, and 2018.11.0. The vulnerable software is the Supplemental Update / Online ROM Flash Component for Linux (x64) software. The installer in this software component could be locally exploited to execute arbitrary code. Drive Models can be found in the Vulnerability Resolution field of the security bulletin. The 2019_03 SPP and Supplemental update / Online ROM Flash Component for Linux (x64) after 2019.03.0 has fixed this issue.
{
"affected": [],
"aliases": [
"CVE-2020-7135"
],
"database_specific": {
"cwe_ids": [
"CWE-269"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-04-27T15:15:00Z",
"severity": "MODERATE"
},
"details": "A potential security vulnerability has been identified in the disk drive firmware installers named Supplemental Update / Online ROM Flash Component on HPE servers running Linux. The vulnerable software is included in the HPE Service Pack for ProLiant (SPP) releases 2018.06.0, 2018.09.0, and 2018.11.0. The vulnerable software is the Supplemental Update / Online ROM Flash Component for Linux (x64) software. The installer in this software component could be locally exploited to execute arbitrary code. Drive Models can be found in the Vulnerability Resolution field of the security bulletin. The 2019_03 SPP and Supplemental update / Online ROM Flash Component for Linux (x64) after 2019.03.0 has fixed this issue.",
"id": "GHSA-r3mc-836c-4x5x",
"modified": "2022-05-24T17:16:37Z",
"published": "2022-05-24T17:16:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7135"
},
{
"type": "WEB",
"url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbhf03945en_us"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-R3P3-5F35-H6MF
Vulnerability from github – Published: 2022-12-28 15:30 – Updated: 2023-01-09 20:06Improper Privilege Management in GitHub repository usememos/memos prior to 0.9.1.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/usememos/memos"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-4808"
],
"database_specific": {
"cwe_ids": [
"CWE-269"
],
"github_reviewed": true,
"github_reviewed_at": "2023-01-09T20:06:47Z",
"nvd_published_at": "2022-12-28T14:15:00Z",
"severity": "HIGH"
},
"details": "Improper Privilege Management in GitHub repository usememos/memos prior to 0.9.1.",
"id": "GHSA-r3p3-5f35-h6mf",
"modified": "2023-01-09T20:06:47Z",
"published": "2022-12-28T15:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4808"
},
{
"type": "WEB",
"url": "https://github.com/usememos/memos/commit/3556ae4e651d9443dc3bb8a170dd3cc726517a53"
},
{
"type": "PACKAGE",
"url": "https://github.com/usememos/memos"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/11877cbf-fcaf-42ef-813e-502c7293f2b5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "usememos/memos Improper Privilege Management vulnerability"
}
GHSA-R3Q5-8W4Q-VJMH
Vulnerability from github – Published: 2022-01-15 00:01 – Updated: 2022-07-13 00:01In sendLegacyVoicemailNotification of LegacyModeSmsHandler.java, there is a possible permissions bypass due to an unsafe PendingIntent. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-9Android ID: A-185126549
{
"affected": [],
"aliases": [
"CVE-2021-39627"
],
"database_specific": {
"cwe_ids": [
"CWE-269"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-01-14T20:15:00Z",
"severity": "HIGH"
},
"details": "In sendLegacyVoicemailNotification of LegacyModeSmsHandler.java, there is a possible permissions bypass due to an unsafe PendingIntent. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-9Android ID: A-185126549",
"id": "GHSA-r3q5-8w4q-vjmh",
"modified": "2022-07-13T00:01:37Z",
"published": "2022-01-15T00:01:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39627"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2022-01-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-R3V2-5GW5-4P6R
Vulnerability from github – Published: 2025-09-09 21:30 – Updated: 2025-09-12 15:31Excessive Privileges vulnerability in Calix GigaCenter ONT (Quantenna SoC modules) allows Privilege Abuse.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE, 812G, 813G, 818G.
{
"affected": [],
"aliases": [
"CVE-2025-53913"
],
"database_specific": {
"cwe_ids": [
"CWE-269"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-09T20:15:42Z",
"severity": "HIGH"
},
"details": "Excessive Privileges vulnerability in Calix GigaCenter ONT (Quantenna SoC modules) allows Privilege Abuse.This issue affects GigaCenter ONT: 844E, 844G, 844GE, 854GE, 812G, 813G, 818G.",
"id": "GHSA-r3v2-5gw5-4p6r",
"modified": "2025-09-12T15:31:17Z",
"published": "2025-09-09T21:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53913"
},
{
"type": "WEB",
"url": "https://fluidattacks.com/advisories/forty"
},
{
"type": "WEB",
"url": "https://revers3everything.com/calix-case-five-0-days-five-cves"
},
{
"type": "WEB",
"url": "https://www.calix.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-R3XG-94CC-PWX3
Vulnerability from github – Published: 2022-05-24 17:19 – Updated: 2022-05-24 17:19An elevation of privilege vulnerability exists in Windows Defender that leads arbitrary file deletion on the system.To exploit the vulnerability, an attacker would first have to log on to the system, aka 'Microsoft Windows Defender Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1170.
{
"affected": [],
"aliases": [
"CVE-2020-1163"
],
"database_specific": {
"cwe_ids": [
"CWE-269"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-06-09T20:15:00Z",
"severity": "HIGH"
},
"details": "An elevation of privilege vulnerability exists in Windows Defender that leads arbitrary file deletion on the system.To exploit the vulnerability, an attacker would first have to log on to the system, aka \u0027Microsoft Windows Defender Elevation of Privilege Vulnerability\u0027. This CVE ID is unique from CVE-2020-1170.",
"id": "GHSA-r3xg-94cc-pwx3",
"modified": "2022-05-24T17:19:48Z",
"published": "2022-05-24T17:19:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1163"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1163"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-R3XH-3R3W-47GP
Vulnerability from github – Published: 2026-02-12 15:29 – Updated: 2026-02-12 22:07Summary
When running FrankenPHP in worker mode, the $_SESSION superglobal is not correctly reset between requests. This allows a subsequent request processed by the same worker to access the $_SESSION data of the previous request (potentially belonging to a different user) before session_start() is called.
Details
In standard PHP execution, the environment is torn down completely after every request. In FrankenPHP's worker mode, the application stays in memory, and superglobals are manually reset between requests.
The vulnerability exists because $_SESSION is stored in the Zend Engine's symbol table (EG(symbol_table)). While the standard PHP request shutdown (RSHUTDOWN) decrements the reference count of the session data, it does not remove the $_SESSION variable itself from the symbol table. FrankenPHP's reset logic (frankenphp_reset_super_globals) previously cleared other superglobals but failed to explicitly delete $_SESSION.
Consequently, until session_start() is called in the new request (which re-initializes the variable), the $_SESSION array retains the data from the previous request processed by that specific worker thread.
Impact
This is a cross-request data leakage vulnerability.
- Confidentiality: If an application reads
$_SESSIONbefore callingsession_start(), it can access sensitive information (authentication tokens, user IDs, PII) belonging to the previous user. - Logic Errors / Impersonation: If application logic relies on
$_SESSIONbeing empty or unset to detect a "guest" state, or checks for specific keys in$_SESSIONprior to session initialization, a malicious actor (or accidental race condition) could trigger privilege escalation or user impersonation.
This affects only users running FrankenPHP in worker mode and not session_start() for each request, which is done by default by most frameworks.
PoC
The following steps demonstrate the issue (derived from the regression tests added in the fix):
- Client A sends a request that starts a session and sets sensitive data:
// Request 1
session_start();
$_SESSION['secret'] = 'AliceData';
session_write_close();
- Client B (or the same client without cookies) sends a request to the same worker. This script checks
$_SESSIONwithout starting a session:
// Request 2
// session_start() is NOT called
if (!empty($_SESSION)) {
echo "Leaked Data: " . $_SESSION['secret'];
}
- Result: Client B receives "Leaked Data: AliceData".
Workarounds
- Ensure
session_start()is called immediately at the entry point of your worker script to overwrite any residual data (though this may not cover all edge cases if middleware runs before the controller). - Manually unset
$_SESSIONat the very beginning of the worker loop, before handling the request.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/dunglas/frankenphp"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.11.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-24894"
],
"database_specific": {
"cwe_ids": [
"CWE-269",
"CWE-384",
"CWE-613"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-12T15:29:30Z",
"nvd_published_at": "2026-02-12T20:16:10Z",
"severity": "HIGH"
},
"details": "### Summary\n\nWhen running FrankenPHP in **worker mode**, the `$_SESSION` superglobal is not correctly reset between requests. This allows a subsequent request processed by the same worker to access the `$_SESSION` data of the previous request (potentially belonging to a different user) before `session_start()` is called.\n\n### Details\n\nIn standard PHP execution, the environment is torn down completely after every request. In FrankenPHP\u0027s worker mode, the application stays in memory, and superglobals are manually reset between requests.\n\nThe vulnerability exists because `$_SESSION` is stored in the Zend Engine\u0027s symbol table (`EG(symbol_table)`). While the standard PHP request shutdown (RSHUTDOWN) decrements the reference count of the session data, it does not remove the `$_SESSION` variable itself from the symbol table. FrankenPHP\u0027s reset logic (`frankenphp_reset_super_globals`) previously cleared other superglobals but failed to explicitly delete `$_SESSION`.\n\nConsequently, until `session_start()` is called in the new request (which re-initializes the variable), the `$_SESSION` array retains the data from the previous request processed by that specific worker thread.\n\n### Impact\n\nThis is a **cross-request data leakage** vulnerability.\n\n* **Confidentiality:** If an application reads `$_SESSION` before calling `session_start()`, it can access sensitive information (authentication tokens, user IDs, PII) belonging to the previous user.\n* **Logic Errors / Impersonation:** If application logic relies on `$_SESSION` being empty or unset to detect a \"guest\" state, or checks for specific keys in `$_SESSION` prior to session initialization, a malicious actor (or accidental race condition) could trigger privilege escalation or user impersonation.\n\nThis affects only users running FrankenPHP in **worker mode** and not `session_start()` for each request, which is done by default by most frameworks.\n\n### PoC\n\nThe following steps demonstrate the issue (derived from the regression tests added in the fix):\n\n1. **Client A** sends a request that starts a session and sets sensitive data:\n\n```php\n// Request 1\nsession_start();\n$_SESSION[\u0027secret\u0027] = \u0027AliceData\u0027;\nsession_write_close();\n```\n\n2. **Client B** (or the same client without cookies) sends a request to the same worker. This script checks `$_SESSION` *without* starting a session:\n\n```php\n// Request 2\n// session_start() is NOT called\nif (!empty($_SESSION)) {\n echo \"Leaked Data: \" . $_SESSION[\u0027secret\u0027];\n}\n```\n\n\n3. **Result:** Client B receives \"Leaked Data: AliceData\".\n\n### Workarounds\n\n* Ensure `session_start()` is called immediately at the entry point of your worker script to overwrite any residual data (though this may not cover all edge cases if middleware runs before the controller).\n* Manually unset `$_SESSION` at the very beginning of the worker loop, before handling the request.",
"id": "GHSA-r3xh-3r3w-47gp",
"modified": "2026-02-12T22:07:50Z",
"published": "2026-02-12T15:29:30Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/php/frankenphp/security/advisories/GHSA-r3xh-3r3w-47gp"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24894"
},
{
"type": "WEB",
"url": "https://github.com/php/frankenphp/commit/24d6c991a7761b638190eb081deae258143e9735"
},
{
"type": "PACKAGE",
"url": "https://github.com/php/frankenphp"
},
{
"type": "WEB",
"url": "https://github.com/php/frankenphp/releases/tag/v1.11.2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
],
"summary": "FrankenPHP leaks session data between requests in worker mode"
}
GHSA-R427-J2H7-WV3M
Vulnerability from github – Published: 2026-06-18 13:04 – Updated: 2026-06-18 13:04Impact
When only the Topic or only the User operators are deployed as part of the Entity Operator in the Kafka custom resource, the RBAC rights are not following the principle of least-privilege and the Entity Operator ServiceAccount still has access rights corresponding to both operators. That might allow the ServiceAccount to access KafkaUser custom resources and Secrets when the User operator is not deployed and access KafkaTopic custom resources when the Topic operator is not deployed.
Patches
The issue is fixed in Strimzi 1.0.1 and 1.1.0.
Workarounds
There is no workaround for this issue.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 1.0.0"
},
"package": {
"ecosystem": "Maven",
"name": "io.strimzi:strimzi"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-55226"
],
"database_specific": {
"cwe_ids": [
"CWE-269",
"CWE-272"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-18T13:04:49Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "### Impact\n\nWhen only the Topic or only the User operators are deployed as part of the Entity Operator in the `Kafka` custom resource, the RBAC rights are not following the principle of least-privilege and the Entity Operator ServiceAccount still has access rights corresponding to both operators. That might allow the ServiceAccount to access `KafkaUser` custom resources and Secrets when the User operator is not deployed and access `KafkaTopic` custom resources when the Topic operator is not deployed.\n\n### Patches\n\nThe issue is fixed in Strimzi 1.0.1 and 1.1.0.\n\n### Workarounds\n\nThere is no workaround for this issue.",
"id": "GHSA-r427-j2h7-wv3m",
"modified": "2026-06-18T13:04:49Z",
"published": "2026-06-18T13:04:49Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m"
},
{
"type": "PACKAGE",
"url": "https://github.com/strimzi/strimzi-kafka-operator"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "Strimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator"
}
GHSA-R452-PQ83-GG5J
Vulnerability from github – Published: 2022-05-24 17:18 – Updated: 2022-05-24 17:18An elevation of privilege vulnerability exists when Windows improperly handles calls to Clipboard Service, aka 'Windows Clipboard Service Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1121, CVE-2020-1165, CVE-2020-1166.
{
"affected": [],
"aliases": [
"CVE-2020-1111"
],
"database_specific": {
"cwe_ids": [
"CWE-269"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-05-21T23:15:00Z",
"severity": "HIGH"
},
"details": "An elevation of privilege vulnerability exists when Windows improperly handles calls to Clipboard Service, aka \u0027Windows Clipboard Service Elevation of Privilege Vulnerability\u0027. This CVE ID is unique from CVE-2020-1121, CVE-2020-1165, CVE-2020-1166.",
"id": "GHSA-r452-pq83-gg5j",
"modified": "2022-05-24T17:18:28Z",
"published": "2022-05-24T17:18:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1111"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1111"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-R45Q-P6M3-6GMV
Vulnerability from github – Published: 2021-12-14 00:00 – Updated: 2021-12-16 00:02A collision in access memoization logic in all versions of GitLab CE/EE before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, leads to potential elevated privileges in groups and projects under rare circumstances
{
"affected": [],
"aliases": [
"CVE-2021-39937"
],
"database_specific": {
"cwe_ids": [
"CWE-269"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-13T16:15:00Z",
"severity": "HIGH"
},
"details": "A collision in access memoization logic in all versions of GitLab CE/EE before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, leads to potential elevated privileges in groups and projects under rare circumstances",
"id": "GHSA-r45q-p6m3-6gmv",
"modified": "2021-12-16T00:02:47Z",
"published": "2021-12-14T00:00:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39937"
},
{
"type": "WEB",
"url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39937.json"
},
{
"type": "WEB",
"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/336802"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-R4FJ-MM48-PRVV
Vulnerability from github – Published: 2023-10-23 15:30 – Updated: 2024-04-04 08:52Zscaler Client Connector Installer on Windows before version 3.4.0.124 improperly handled directory junctions during uninstallation. A local adversary may be able to delete folders in an elevated context.
{
"affected": [],
"aliases": [
"CVE-2021-26734"
],
"database_specific": {
"cwe_ids": [
"CWE-269"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-23T14:15:08Z",
"severity": "MODERATE"
},
"details": "Zscaler Client Connector Installer on Windows before version 3.4.0.124 improperly handled directory junctions during uninstallation. A local adversary may be able to delete folders in an elevated context.\n\n\n\n\n\n",
"id": "GHSA-r4fj-mm48-prvv",
"modified": "2024-04-04T08:52:55Z",
"published": "2023-10-23T15:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26734"
},
{
"type": "WEB",
"url": "https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2021"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-1
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Mitigation MIT-48
Strategy: Separation of Privilege
Follow the principle of least privilege when assigning access rights to entities in a software system.
Mitigation MIT-49
Strategy: Separation of Privilege
Consider following the principle of separation of privilege. Require multiple conditions to be met before permitting access to a system resource.
CAPEC-122: Privilege Abuse
An adversary is able to exploit features of the target that should be reserved for privileged users or administrators but are exposed to use by lower or non-privileged accounts. Access to sensitive information and functionality must be controlled to ensure that only authorized users are able to access these resources.
CAPEC-233: Privilege Escalation
An adversary exploits a weakness enabling them to elevate their privilege and perform an action that they are not supposed to be authorized to perform.
CAPEC-58: Restful Privilege Elevation
An adversary identifies a Rest HTTP (Get, Put, Delete) style permission method allowing them to perform various malicious actions upon server data due to lack of access control mechanisms implemented within the application service accepting HTTP messages.