CVE-2026-13523 (GCVE-0-2026-13523)
Vulnerability from cvelistv5 – Published: 2026-06-29 01:30 – Updated: 2026-06-29 12:58 X_Open Source
VLAI
EPSS
VEX
Title
GPAC ISOBMFF base_encoding.c data amplification
Summary
A weakness has been identified in GPAC up to 26.02.0. This affects an unknown part of the file src/utils/base_encoding.c of the component ISOBMFF Parser. Executing a manipulation can lead to highly compressed data. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 297f2d8d1f493d8b241330533cd47f7da758aeb3. A patch should be applied to remediate this issue. The vendor confirms: "We added a check on inflate output size, if it surpasses 32 times the input size we stop in error. This value could be adjusted later."
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 12:58 UTC
Assigner
VulDB
CNA
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/374531 | vdb-entry |
| https://vuldb.com/vuln/374531/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-13523 | third-party-advisory |
| https://vuldb.com/submit/840159 | third-party-advisory |
| https://github.com/gpac/gpac/issues/3588 | exploitissue-tracking |
| https://github.com/gpac/gpac/pull/3589 | issue-trackingpatch |
| https://github.com/gpac/gpac/commit/297f2d8d1f493… | patch |
| https://github.com/gpac/gpac/ | product |
Impacted products
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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.
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- 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.
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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.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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