CVE-2026-31967 is a critical vulnerability (CVSS 9.1) in HTSlib, a library used for bioinformatics file formats, specifically impacting the `cram_decode_slice()` function. This out-of-bounds read (CWE-125) occurs due to unvalidated mate reference IDs in CRAM records, allowing a remote attacker to trigger information leakage or cause a program crash. The attack vector is network-based with low complexity, requiring no privileges or user interaction. Despite its high severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability. Organizations using HTSlib should update to versions 1.23.1, 1.22.2, or 1.21.1 to mitigate this risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.21.1CPE matchmatch criteria | cpe:2.3:a:htslib:htslib:*:*:*:*:*:*:*:* | ||
>= 1.22, < 1.22.2CPE matchmatch criteria | cpe:2.3:a:htslib:htslib:*:*:*:*:*:*:*:* | ||
1.23CPE matchmatch criteria | cpe:2.3:a:htslib:htslib:1.23:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.