Out-of-bounds Read in Xqq Libaribcaption
CVE-2026-112284
libaribcaption 1.1.0 through 1.1.2 contains a global out-of-bounds read in DecoderImpl::HandleGLGR() that reads past the 78-entry kLatinSpecialTable without an upper bound check. Attackers can supply crafted captions designating the Latin special set with ESC 28 4C followed by bytes 0x6F-0x7E to leak adjacent read-only data or crash decoding.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/xqq/libaribcaption/blob/v1.1.2/src/decoder/b24_conv_tables.hpp (technical-description)
- github.com/xqq/libaribcaption/blob/v1.1.2/src/decoder/decoder_impl.cpp (technical-description)
- github.com/xqq/libaribcaption/commit/9917cb311c93d884cb820d122911a211042da26c (technical-description, patch)
- hackmd.io/@haindpwn/libaribcaption-latin-special-table-oob-read (third-party-advisory)
- www.vulncheck.com/advisories/libaribcaption-1.1.0-through-1.1.2-out-of-bounds-r… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112284?
- CVE-2026-112284 is a low-severity vulnerability in Xqq Libaribcaption, classified under Out-of-bounds Read. CVSS score: 3.3/10. Published 2026-10-19.
- How severe is CVE-2026-112284?
- Low severity. CVSS v3 base score is 3.3 out of 10.