Buffer Overwrite Vulnerability in ThorVG Vector Graphics Engine
CVE-2026-123367

7.4HIGH

Key Information:

Vendor

Thorvg

Status
Thorvg
Vendor
CVE Published:
9 November 2026

What is CVE-2026-123367?

The ThorVG Vector Graphics Engine has a vulnerability in its JPEG decoder that allows for the exploitation of duplicate component selectors within the SOS scan header. This can lead to the manipulation of memory buffers, potentially causing memory corruption and crashes when processing specially crafted grayscale JPEG images. The vulnerability is particularly concerning as it can be triggered not only through direct JPEG decoding but also via Lottie content embedding JPEG images. A fix has been implemented in version 1.1.2 to address this issue.

Affected Version(s)

thorvg < 1.1.2

References

https://github.com/thorvg/thorvg/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/thorvg/thorvg/commit/67680c546d38d817e...
x_refsource_MISC
https://github.com/thorvg/thorvg/commit/e740313029dd427d1...
x_refsource_MISC

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.