CVE-2026-32883: randombit botan · Improper Verification of Cryptographic Signature
Affects randombit botanSource CVE Database V5
Not known to be exploited · CVSS 5.9 Medium : upgrade to 3.11.0 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.11.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade botan and randombit/botan to 3.11.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| randombitbotan | Affected
| Fixed in
|
GitHubrandombit/botanpkg:github/randombit/botanOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in Botan version 3.11.0. Users of affected versions (>= 3.0.0 and < 3.11.0) should upgrade to version 3.11.0 or later to ensure proper verification of OCSP response signatures during X509 path validation. No alternative mitigations are indicated.
Description
Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0.