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.
Affected Products
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CVE record
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NVD configurations
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Red Hat packages
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OpenCVE enrichment
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| RURBAN | GD | unaffected |
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| Vendor | Product | Versions | ||||||||
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| Rurban | Gd |
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Remediation
Vendor Solution
Upgrade to GD 2.86 or later, which opens filename arguments with a 3-arg read open so the filename is never interpreted as a command or redirect.
Vendor Workaround
For deployments that cannot upgrade to 2.86, do not pass untrusted input as a pathname to GD::Image constructors. Callers can open the file themselves and pass the resulting filehandle, which bypasses the affected string path.
Tracking
Advisories
| Source | ID | Title |
|---|---|---|
 Debian DLA |
DLA-4638-1 | libgd-perl security update |
 Debian DSA |
DSA-6345-1 | libgd-perl security update |
 Ubuntu USN |
USN-8484-1 | GD.pm vulnerability |
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
User Interaction None
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: 1.4% (1.353% probability within 30 days)
Exploitation none
Automatable yes
Technical Impact total
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Rurban
Rurban gd |
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| Vendors & Products |
Rurban
Rurban gd |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
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| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | 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 | |
| Weaknesses | CWE-73 CWE-78 |
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| References |
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