CVE-2026-44517 (GCVE-0-2026-44517)
Vulnerability from cvelistv5 – Published: 2026-08-21 20:29 – Updated: 2026-08-25 17:07
VLAI
EPSS
VEX
Title
Buildah: Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive
Summary
Buildah is a tool that facilitates building OCI images. From 1.38.1 until 1.43.2 and 1.44.0, TempDirForURL in define/types.go does not securely confine Git repository subdirectories to the downloaded build context, and downloadToDirectory and stdinToDirectory can follow a Dockerfile symlink left by a partially extracted tar archive. A malicious server supplying a Git repository or tar archive can cause files outside the build context directory to be included in the context or copied into the build. This issue is fixed in versions 1.43.2 and 1.44.0.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 17:05 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/podman-container-tools/buildah… | x_refsource_CONFIRM |
| https://github.com/podman-container-tools/buildah… | x_refsource_MISC |
| https://github.com/podman-container-tools/buildah… | x_refsource_MISC |
| https://github.com/podman-container-tools/buildah… | x_refsource_MISC |
| https://github.com/podman-container-tools/buildah… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| containers | buildah |
Affected:
>= 1.38.1, < 1.43.2
|
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-44517",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-25T17:05:33.478033Z",
"version": "2.0.3"
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"providerMetadata": {
"dateUpdated": "2026-08-25T17:07:10.143Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
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"cna": {
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"vendor": "containers",
"versions": [
{
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}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
"version": "3.1"
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"problemTypes": [
{
"descriptions": [
{
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"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
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"type": "CWE"
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
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"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/podman-container-tools/buildah/security/advisories/GHSA-49p4-px3h-rq49"
},
{
"name": "https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c",
"tags": [
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"url": "https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c"
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{
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"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/podman-container-tools/buildah/commit/fc2003bb2efeb3ed7d5c7e1e88d04e78f370a944"
},
{
"name": "https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2"
},
{
"name": "https://github.com/podman-container-tools/buildah/releases/tag/v1.44.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/podman-container-tools/buildah/releases/tag/v1.44.0"
}
],
"source": {
"advisory": "GHSA-49p4-px3h-rq49",
"discovery": "UNKNOWN"
},
"title": "Buildah: Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive"
}
},
"cveMetadata": {
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"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-44517",
"datePublished": "2026-08-21T20:29:00.354Z",
"dateReserved": "2026-05-06T18:28:20.888Z",
"dateUpdated": "2026-08-25T17:07:10.143Z",
"state": "PUBLISHED"
},
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"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-44517",
"date": "2026-08-26",
"epss": "0.0018",
"percentile": "0.07548"
},
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-24T19:06:21+00:00",
"cve": "CVE-2026-44517",
"id": "CVE-2026-44517",
"initial_release_date": "2026-08-21T20:29:00.354000+00:00",
"product_status:known_affected": "40",
"product_status:known_not_affected": "22",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "github.com/containers/buildah: Buildah: Build breakout via malicious Git repository or tar archive",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44517.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-22T16:29:23Z",
"cve": "CVE-2026-44517",
"id": "CVE-2026-44517",
"initial_release_date": "2026-08-11T00:07:09Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-44517",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-44517.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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