ImageMagick versions before 7.1.2-32 and 6.9.13-57 contain uninitialized heap memory disclosure in the GIF decoder's application extension handler… (CVE-2026-102635)
ImageMagick versions before 7.1.2-32 and 6.9.13-57 have a vulnerability in the GIF decoder's application extension handler that can disclose uninitialized heap memory. This occurs when processing crafted malicious GIF files, causing the number parser to read and store uninitialized heap memory as image metadata. The vulnerability has a medium severity rating with a CVSS score of 3.7.
AI Analysis
Technical Summary
CVE-2026-102635 describes an uninitialized heap memory disclosure vulnerability in ImageMagick's GIF decoder application extension handler (coders/gif.c). Specifically, in versions prior to 7.1.2-32 and 6.9.13-57, attackers can craft malicious GIF files that trigger the number parser to read uninitialized heap memory. This memory content is then stored as image metadata, potentially leaking sensitive heap information. The vulnerability is classified under CWE-908 (Use of Uninitialized Resource).
Potential Impact
The vulnerability allows an attacker to cause the application to disclose uninitialized heap memory contents by processing a malicious GIF file. This results in information disclosure of potentially sensitive heap data. There is no indication of integrity or availability impact. The CVSS score of 3.7 reflects a low complexity attack vector with network access but requiring high attack complexity and no privileges or user interaction.
Mitigation Recommendations
A fix is available in ImageMagick versions 7.1.2-32 and 6.9.13-57 and later. Users should upgrade to these or newer versions to remediate this vulnerability. Patch status is confirmed by the version information in the description. No additional mitigation steps are indicated.
ImageMagick versions before 7.1.2-32 and 6.9.13-57 contain uninitialized heap memory disclosure in the GIF decoder's application extension handler… (CVE-2026-102635)
Description
ImageMagick versions before 7.1.2-32 and 6.9.13-57 have a vulnerability in the GIF decoder's application extension handler that can disclose uninitialized heap memory. This occurs when processing crafted malicious GIF files, causing the number parser to read and store uninitialized heap memory as image metadata. The vulnerability has a medium severity rating with a CVSS score of 3.7.
CVSS v3.1
Score 3.7low
Affected software
pkg:github/imagemagick/ImageMagickpkg:github/imagemagick/ImageMagick6Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-102635 describes an uninitialized heap memory disclosure vulnerability in ImageMagick's GIF decoder application extension handler (coders/gif.c). Specifically, in versions prior to 7.1.2-32 and 6.9.13-57, attackers can craft malicious GIF files that trigger the number parser to read uninitialized heap memory. This memory content is then stored as image metadata, potentially leaking sensitive heap information. The vulnerability is classified under CWE-908 (Use of Uninitialized Resource).
Potential Impact
The vulnerability allows an attacker to cause the application to disclose uninitialized heap memory contents by processing a malicious GIF file. This results in information disclosure of potentially sensitive heap data. There is no indication of integrity or availability impact. The CVSS score of 3.7 reflects a low complexity attack vector with network access but requiring high attack complexity and no privileges or user interaction.
Mitigation Recommendations
A fix is available in ImageMagick versions 7.1.2-32 and 6.9.13-57 and later. Users should upgrade to these or newer versions to remediate this vulnerability. Patch status is confirmed by the version information in the description. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-prg6-qcxr-rp63
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-102635"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6abc27c0680226ef6846f801
Added to database: 09/29/2026, 21:04:00 UTC
Last enriched: 09/29/2026, 21:17:01 UTC
Last updated: 09/30/2026, 03:18:54 UTC
Views: 4
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