5.9

CVE-2026-32883: botan_project botan

CVSS: 5.9v3.1MediumAnalyzed
AliasesALPINE-CVE-2026-32883UBUNTU-CVE-2026-32883DEBIAN-CVE-2026-32883
Published 30-03-2026Last modified 02-04-2026
Open JSON

Vulnerability summary

CVE-2026-32883 is a medium (CVSS 5.9) vulnerability in botan_project botan. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.3% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.19%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-03-2026
    PublishedVulnerability first disclosed.
  2. 02-04-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

+0.04 pp

From 0.15% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu3 products
  • botanAll versions (No fix recorded)
  • botan1.10All versions (No fix recorded)
  • botan3All versions (No fix recorded)
Alpine1 product
  • botan3< 3.11.0-r0
Botan_project1 product
Debian1 product
  • botan3< 3.11.0+dfsg-2
Randombit1 product

5 vendors · 7 products

References

5 links