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VulnerabilityPublished

CVE-2026-123367: thorvg · Out-of-bounds Write

Affects thorvgSource CVE Database V5

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Not known to be exploited · CVSS 7.4 High : upgrade to 1.1.2 soon.

Data as of 9 Nov 2026, 17:34 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.17.4
Patch
Available – fixed in 1.1.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Upgrade thorvg to 1.1.2.

Affected software

ProductAffectedFixed in
thorvgthorvgAffected
  • <1.1.2
Fixed in
  • 1.1.2

AI-suggested

Upgrade ThorVG to version 1.1.2 or later, where this vulnerability is fixed. No other mitigation is indicated or required according to the vendor advisory.

Description

ThorVG versions prior to 1.1.2 contain an out-of-bounds write vulnerability in the bundled jpgd JPEG decoder. This occurs when a crafted grayscale JPEG image includes duplicate component selectors in the SOS scan header, leading to heap buffer overflows during decoding. The flaw can be triggered via direct JPEG decoding or JPEG images embedded in Lottie content. The issue results in memory corruption and process crashes. The vulnerability is fixed in ThorVG version 1.1.2.

References

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