libpng 1.8.0 APNG Parser interpretation conflict

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in libpng 1.8.0 and classified as critical. Affected by this vulnerability is an unknown functionality of the component APNG Parser. The manipulation results in interpretation conflict. This vulnerability is reported as CVE-2026-40930. The attack can be launched remotely. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in libpng 1.8.0. It has been classified as critical. Affected is an unknown code of the component APNG Parser. The manipulation with an unknown input leads to a interpretation conflict vulnerability. CWE is classifying the issue as CWE-436. Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed by The disclosure. The advisory is shared for download at seclists.org. This vulnerability is traded as CVE-2026-40930. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Applying a patch is able to eliminate this problem.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Interpretation conflict
CWE: CWE-436
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/18/2026 Advisory disclosed
05/18/2026 +0 days VulDB entry created
05/18/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: seclists.org
Researcher: The disclosure
Status: Confirmed

CVE: CVE-2026-40930 (🔒)
GCVE (CVE): GCVE-0-2026-40930
GCVE (VulDB): GCVE-100-364452

Entryinfo

Created: 05/18/2026 10:03
Changes: 05/18/2026 10:03 (51)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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