GPAC up to 26.02.0 ISOBMFF Parser base_encoding.c data amplification

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k1.48

Summaryinfo

A vulnerability has been found in GPAC up to 26.02.0 and classified as problematic. This vulnerability affects unknown code of the file src/utils/base_encoding.c of the component ISOBMFF Parser. The manipulation leads to data amplification. This vulnerability is documented as CVE-2026-13523. The attack needs to be performed locally. Additionally, an exploit exists. To fix this issue, it is recommended to deploy a patch. 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."

Detailsinfo

A vulnerability was found in GPAC up to 26.02.0 and classified as problematic. This issue affects an unknown part of the file src/utils/base_encoding.c of the component ISOBMFF Parser. The manipulation with an unknown input leads to a data amplification vulnerability. Using CWE to declare the problem leads to CWE-409. The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. Impacted is availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-13523. The exploitation is known to be easy. Attacking locally is a requirement. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. 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."

Applying the patch 297f2d8d1f493d8b241330533cd47f7da758aeb3 is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Data amplification
CWE: CWE-409 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 297f2d8d1f493d8b241330533cd47f7da758aeb3

Timelineinfo

06/28/2026 Advisory disclosed
06/28/2026 +0 days VulDB entry created
06/28/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 3588
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-13523 (🔒)
GCVE (CVE): GCVE-0-2026-13523
GCVE (VulDB): GCVE-100-374531
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/28/2026 09:52
Changes: 06/28/2026 09:52 (61)
Complete: 🔍
Submitter: Fantasy
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #840159: GPAC <= 26.02.0 Uncontrolled Resource Consumption (by Fantasy)

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