CVE-2026-42046

libcaca: libcaca is a colour ASCII art library

CVE-2026-42046 is fixed in 3 products on 1 platform, first by caca-utils 0.99.beta19-2.2ubuntu4.2, released May 11, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0037
30th percentile

libcaca is a colour ASCII art library. In 0.99.beta20 and earlier, an integer overflow vulnerability in libcaca's canvas import functionality allows an attacker to cause a controlled heap out-of-bounds write (heap overflow) by supplying a crafted file in the "caca" format. Depending on the build configuration and memory allocator, this may lead to memory corruption or remote code execution. This is the same vulnerability as CVE-2021-3410 but the fix at that time was not fully correct. Commit fb77acff9ba6bb01d53940da34fb10f20b156a23 fixes this vulnerability.

Where it's fixed

ProductFixed inFixReleased
Linux
caca-utils · Ubuntu 22.04.1 LTS (jammy) 0.99.beta19-2.2ubuntu4.2 caca-utils 0.99.beta19-2.2ubuntu4.2 May 11, 2026
caca-utils · Ubuntu 24.04.5 LTS (noble) 0.99.beta20-4ubuntu0.2 caca-utils 0.99.beta20-4ubuntu0.2 May 11, 2026
caca-utils · Ubuntu 25.10 (questing) 0.99.beta20-5ubuntu0.25.10.2 caca-utils 0.99.beta20-5ubuntu0.25.10.2 May 11, 2026
caca-utils · Ubuntu 26.04.1 LTS (resolute) 0.99.beta20-6ubuntu2.1 caca-utils 0.99.beta20-6ubuntu2.1 May 11, 2026
libcaca · Debian 12.15 (bookworm) 0.99.beta20-3+deb12u1 DEBIAN-CVE-2026-42046 May 11, 2026
libcaca · Debian 13.5 (trixie) 0.99.beta20-5+deb13u1 DEBIAN-CVE-2026-42046 May 11, 2026
libcaca · Debian 14 0.99.beta20-7 DEBIAN-CVE-2026-42046 May 11, 2026
libcaca · opensuse-leap 16.0 0.99.beta20-160000.3.1 OPENSUSE-SU-2026:21101-1 Jun 19, 2026
libcaca · sles 15.6 0.99.beta20-150600.3.3.1 SUSE-SU-2026:2423-1 Jun 16, 2026
libcaca · sles 15.7 0.99.beta20-150600.3.3.1 SUSE-SU-2026:2423-1 Jun 16, 2026
libcaca · sles 16.0 0.99.beta20-160000.3.1 SUSE-SU-2026:22175-1 Jun 19, 2026
libcaca0 · Ubuntu 22.04.1 LTS (jammy) 0.99.beta19-2.2ubuntu4.2 libcaca0 0.99.beta19-2.2ubuntu4.2 May 11, 2026
libcaca0 · Ubuntu 24.04.5 LTS (noble) 0.99.beta20-4ubuntu0.2 libcaca0 0.99.beta20-4ubuntu0.2 May 11, 2026
libcaca0 · Ubuntu 25.10 (questing) 0.99.beta20-5ubuntu0.25.10.2 libcaca0 0.99.beta20-5ubuntu0.25.10.2 May 11, 2026
libcaca0 · Ubuntu 26.04.1 LTS (resolute) 0.99.beta20-6ubuntu2.1 libcaca0 0.99.beta20-6ubuntu2.1 May 11, 2026

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