CVE-2026-82522

libjxl before 0.12 contains an integer underflow vulnerability in the container box parser that allows remote attackers to inject arbitrary metadata by exploiting 64-bit box size truncation to size_t on 32-bit platforms. Attackers can supply a crafted JPEG XL file causing the decoder to parse attacker-controlled codestream bytes as phantom box headers, enabling injection of arbitrary metadata (Exif, XMP, IPTC, JUMBF) and potential out-of-bounds reads.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/libjxl/libjxl/commit/22ad80af1454f0444ea34115e49ed40517147d68
https://github.com/libjxl/libjxl/pull/4885
https://github.com/libjxl/libjxl/releases/tag/v0.12.0
https://www.vulncheck.com/advisories/libjxl-container-box-parser-integer-underflow-via-32-bit-size-truncation

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-02 18:21

Updated : 2026-09-02 19:18

NVD link : CVE-2026-82522

Mitre link : CVE-2026-82522

CVE.ORG link : CVE-2026-82522

JSON object : View

Products Affected

No product.

CWE

CWE-681

Incorrect Conversion between Numeric Types

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