CVE-2026-32953
Description
Tillitis TKey Client package is a Go package for a TKey client. Versions 1.2.0 and below contain a critical bug in the tkeyclient Go module which causes 1 out of every 256 User Supplied Secrets (USS) to be silently ignored, producing the same Compound Device Identifier (CDI)—and thus the same key material—as if no USS is provided. This happens because a buffer index error overwrites the USS-enabled boolean with the first byte of the USS digest, so any USS whose hash starts with 0x00 is effectively discarded. This issue has been fixed in version 1.3.0. Users unable to upgrade immediately should switch to a USS whose hash does not begin with a zero byte.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/tillitis/tkeyclientGo | < 1.3.0 | 1.3.0 |
Affected products
3- ghsa-coords2 versionspkg:golang/github.com/tillitis/tkeyclientpkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6
< 1.3.0+ 1 more
- (no CPE)range: < 1.3.0
- (no CPE)range: < 0.0.20260326T203309-150000.1.155.2
Patches
Vulnerability mechanics
References
5- github.com/tillitis/tkeyclient/commit/4954dccf0287657edf8d405057e134cdff9c59e8nvdPatchWEB
- github.com/tillitis/tkeyclient/security/advisories/GHSA-4w7r-3222-8h6vnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-4w7r-3222-8h6vghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-32953ghsaADVISORY
- github.com/tillitis/tkeyclient/releases/tag/v1.3.0nvdRelease NotesWEB
News mentions
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