CVE-2026-11526

GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle. GD::Image::_make_filehandle opens a filename argument with Perl's 2-arg open(), so a filename that begins or ends with a pipe ("| cmd", "cmd |") or begins with a redirect ("> path", ">> path") is run as a command or redirect rather than opened as a file. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected. Any caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/lstein/Perl-GD/commit/67b163713c6c78dfeb693da0978ae934e5cd8210.patch
https://metacpan.org/release/RURBAN/GD-2.86/changes
http://www.openwall.com/lists/oss-security/2026/06/14/4
https://lists.debian.org/debian-lts-announce/2026/06/msg00027.html

Configurations

No configuration.

History

21 Jun 2026, 14:16

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2026/06/msg00027.html -

15 Jun 2026, 18:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8

15 Jun 2026, 00:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/06/14/4 -

14 Jun 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-14 12:16

Updated : 2026-06-21 14:16

NVD link : CVE-2026-11526

Mitre link : CVE-2026-11526

CVE.ORG link : CVE-2026-11526

JSON object : View

Products Affected

No product.

CWE

CWE-73

External Control of File Name or Path

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

{"id": "CVE-2026-11526", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-11526", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-15T16:17:04.865826Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "affectedData": [{"repo": "https://github.com/lstein/Perl-GD", "vendor": "RURBAN", "product": "GD", "versions": [{"status": "affected", "version": "0", "lessThan": "2.86", "versionType": "custom"}], "packageName": "GD", "programFiles": ["lib/GD/Image.pm", "lib/GD/Image_pm.PL"], "collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "programRoutines": [{"name": "GD::Image::_make_filehandle"}]}]}], "published": "2026-06-14T12:16:22.403", "references": [{"url": "https://github.com/lstein/Perl-GD/commit/67b163713c6c78dfeb693da0978ae934e5cd8210.patch", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://metacpan.org/release/RURBAN/GD-2.86/changes", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "http://www.openwall.com/lists/oss-security/2026/06/14/4", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00027.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "description": [{"lang": "en", "value": "CWE-73"}, {"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle.\n\nGD::Image::_make_filehandle opens a filename argument with Perl's 2-arg open(), so a filename that begins or ends with a pipe (\"| cmd\", \"cmd |\") or begins with a redirect (\"> path\", \">> path\") is run as a command or redirect rather than opened as a file. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected.\n\nAny caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID."}], "lastModified": "2026-06-21T14:16:23.273", "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}