6.5

CVE-2026-0636: LDAP Injection Vulnerability in LDAPStoreHelper.java

Awaiting analysis
AliasesUBUNTU-CVE-2026-0636DEBIAN-CVE-2026-0636CGA-2g33-83pf-6x53
Published 15-04-2026Last modified 18-09-2026

Vulnerability summary

CVE-2026-0636 is a medium (CVSS 6.5) vulnerability in legion of the bouncy castle inc. bc-java. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 44.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.53%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 2
OPENSUSE-SU-2026:10571-1RHSA-2026:18054RHSA-2026:18055RHSA-2026:53644RHSA-2026:53645RHSA-2026:53646

Timeline

  1. 15-04-2026
    PublishedVulnerability first disclosed.
  2. 18-09-2026
    Last modifiedVulnerability information updated.

Description

Improper neutralization of special elements used in an LDAP query ('LDAP injection') vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcprov on all (prov modules). This vulnerability is associated with program files LDAPStoreHelper. This issue affects BC-JAVA: from 1.74 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84.

CVSS metrics

10 scores · 7 sources · 2 versions

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.53% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard146 products
  • apache-hop< 2.17.0-r9
  • apache-nifi< 2.9.0-r0 | < 2.9.0-r3
  • apache-nifi-registry< 2.9.0-r3
  • apache-nifi-registry-toolkit< 2.9.0-r3
  • apache-pulsar-4.0< 4.0.10-r0
Wolfi36 products
  • apache-nifi< 2.9.0-r0 | < 2.9.0-r3
  • apache-nifi-registry< 2.9.0-r3
  • apache-nifi-registry-toolkit< 2.9.0-r3
  • apache-pulsar-4.1All versions (No fix recorded)
  • apache-pulsar-4.2< 4.2.1-r0
Org.bouncycastle3 products
  • bcprov-jdk14≥ 1.74, < 1.84
  • bcprov-jdk15to18≥ 1.74, < 1.84
  • bcprov-jdk18on≥ 1.74, < 1.84
Debian1 product
  • bouncycastleAll versions (No fix recorded) | < 1.86-1
Legion of the bouncy castle inc.1 product
  • bc-java≥ 1.74, < 1.80.2 | ≥ 1.81, < 1.81.1 | ≥ 1.82, < 1.84
Ubuntu1 product
  • bouncycastleAll versions (No fix recorded)

6 vendors · 188 products

References

38 links
Show all 38 references