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Fencer Vulns
low 3.3

CVE-2026-6192 json

uclouvain openjpeg pi.c opj_pi_initialise_encode integer overflow

published 2026-04-13 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-22030 , GHSA-6jfp-5ggc-pgmx , JLSEC-2026-1267

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

A vulnerability was identified in uclouvain openjpeg up to 2.5.4. This impacts the function opj_pi_initialise_encode in the library src/lib/openjp2/pi.c. The manipulation leads to integer overflow. The attack must be carried out locally. The exploit is publicly available and might be used. The identifier of the patch is 839936aa33eb8899bbbd80fda02796bb65068951. It is suggested to install a patch to address this issue.

Patch / fix

  • openjpeg2 Debian 12 2.5.0-2+deb12u3
  • openjpeg2 Debian 13 2.5.3-2.1~deb13u2
  • openjpeg2 Debian 14 2.5.4-1.1

debian advisories DEBIAN-CVE-2026-6192

  • openjpeg2 Ubuntu 22.04 LTS 2.4.0-6ubuntu0.5
  • openjpeg2 Ubuntu 24.04 LTS 2.5.0-2ubuntu0.5
  • openjpeg2 Ubuntu 25.10 2.5.3-2.1ubuntu0.1
  • openjpeg2 Ubuntu 26.04 LTS 2.5.4-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2026-6192

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openjpeg Alpine 3.22, Alpine 3.21 2.5.4-r1
  • openjpeg Alpine 3.24, Alpine 3.23 2.5.4-r2
  • qt6-qtwebengine Alpine 3.23 6.10.3-r3
  • qt6-qtwebengine Alpine 3.24 6.11.0-r9

alpine advisories ALPINE-CVE-2026-6192

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-6192 updated cvss 3.3

uclouvain/openjpeg: OpenJPEG: Denial of Service via integer overflow in opj_pi_initialise_encode

  • Red Hat Enterprise Linux 10 openjpeg2
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 7 openjpeg2, openjpeg2-tools Red Hat Enterprise Linux 8 openjpeg2, openjpeg2-tools Red Hat Enterprise Linux 9 openjpeg2, openjpeg2-tools
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/uclouvain/openjpeg/issues/1619 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 4.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CNA 3.0 3.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CNA 2.0 1.7 AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C
CNA 4.0 1.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CNA 2.0 1.7 AV:L/AC:L/Au:S/C:N/I:N/A:P
OSV 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
julia OpenJpeg_jll
all versions
 no fix listed

Affected products

  • uclouvain openjpeg

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.