5.1

CVE-2026-8149: legion of the bouncy castle inc. bc-fja

CVSS: 5.1v4.0MediumAwaiting analysis
AliasesCGA-2gq4-rhf3-38gfCGA-32v6-x9pg-fvhhCGA-3xcp-c3c6-4f5w
Published 08-05-2026Last modified 21-07-2026
Open JSON

Vulnerability summary

CVE-2026-8149 is a medium (CVSS 5.1) vulnerability in legion of the bouncy castle inc. bc-fja. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.6% of scored vulnerabilities.

Overall risk
20/100
0100
Low · default modelHow is this calculated?
CVSS score
5.1/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.17%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-F9PJ-5HW2-48G6

Timeline

  1. 08-05-2026
    PublishedVulnerability first disclosed.
  2. 21-07-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on X86_64, AVX, AVX-512f, Linux, Legion of the Bouncy Castle Inc. BC-FJA bc-fips on Linux, X86_64, AVX, AVX-512f. This vulnerability is associated with program files gcm128w, gcm512w, gcm128w.C, gcm512w.C. This issue affects BC-LTS: from 2.73.0 before 2.73.11; BC-FJA: from 2.1.0 before 2.1.3.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.01 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.17%

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

Chainguard17 products
  • bouncycastle-fips< 2.1.3-r0
  • geoserver-3.0< 3.0.0-r3
  • guacamole-client-extensions< 1.6.0-r10
  • keycloak-fips-26.6< 26.6.4-r2
  • keycloak-fips-26.6-iamguarded-fips< 26.6.4-r2
Wolfi9 products
  • opensearch-2< 2.19.6-r0
  • opensearch-3< 3.7.0-r1
  • opensearch-3-discovery-ec2< 3.8.0-r3
  • opensearch-3-iamguarded-compat< 3.8.0-r3
  • opensearch-3-ml-commons< 3.7.0-r2 | < 3.7.0-r1
Legion of the bouncy castle inc.2 products
Org.bouncycastle1 product
  • bcprov-lts8on≥ 2.73.0, < 2.73.11

4 vendors · 29 products

References

2 links