🛡️ JLSEC-2026-984 — imagemagick-jll (CVE-2026-30931)

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

ImageMagick has heap-based buffer overflow in UHDR encoder

A heap-based buffer overflow in the UHDR encoder can happen due to truncation of a value and it would allow an out of bounds write.

```

================================================================

==2158399==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x521000039500 at pc 0x562a4a42f968 bp 0x7ffcca4ed6c0 sp 0x7ffcca4ed6b0

WRITE of size 1 at 0x521000039500 thread T0

```

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

JLSEC-2026-984 is recorded against 1 package.

  • imagemagick-jll

Timeline and source

Published on 30 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Web)
github.com (Web)
nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-30
Updated 2026-08-12
Modified 2026-07-30
Fix URL N/A

Affected Packages

Software From version Fixed in
imagemagick-jll — —

Similar Threats

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