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CVE-2026-91088

GPAC URL url.c gf_url_concatenate_ex heap-based overflow

MEDIUM
4.8
CVSS Score
Published: September 15, 2026 at 07:00 AM UTC
Updated: September 15, 2026 at 03:17 PM UTC
1 product affected across 1 vendorGpac

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A vulnerability has been found in GPAC up to f1219cde. This issue affects the function gf_url_concatenate_ex of the file utils/url.c of the component URL Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. Upgrading to version abi-16.23 is capable of addressing this issue. The identifier of the patch is afca1f1181668d85941d51ed1adf647807d5d975. It is advisable to upgrade the affected component.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Gpac· Gpac
95%
All versionsf1219cde
Vendor states this is fixed in abi-16.23 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (8)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/403650
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/403650/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-91088
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/919757
Issue Tracking
Source: cverecord
https://github.com/gpac/gpac/issues/3808
Patch
Source: cverecord
https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975
Patch
Source: cverecord
https://github.com/gpac/gpac/releases/tag/abi-16.23
Product
Source: cverecord
https://github.com/gpac/gpac/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-122CWE-119

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