CVE-2026-42046 (GCVE-0-2026-42046)
Vulnerability from cvelistv5 – Published: 2026-05-11 21:23 – Updated: 2026-05-12 13:16
VLAI
EPSS
VEX
Title
libcaca: Heap OOB write in canvas import functions caused by int overflow
Summary
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.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 13:16 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cacalabs/libcaca/security/advi… | x_refsource_CONFIRM |
| https://github.com/cacalabs/libcaca/issues/86 | x_refsource_MISC |
| https://github.com/cacalabs/libcaca/commit/fb77ac… | x_refsource_MISC |
Impacted products
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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