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Response snapshot Nov 4, 2026, 04:16 UTC

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VulnerabilityCVE-2026-0636

Bouncy Castle has an LDAP injection

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. Issue affecting: BC 1.74 to 1.80.1, BC 1.81, BC 1.

At a glance

Exploited
Not known
Severity
5.5 Medium (CVSS 4.0)
Chance of exploitation
Not estimated
Sources
1 source

What to do

GitHub lists first patched versions: org.bouncycastle:bcprov-jdk14: 1.80.2; org.bouncycastle:bcprov-jdk15to18: 1.80.2; org.bouncycastle:bcprov-jdk18on: 1.80.2; org.bouncycastle:bcprov-jdk14: 1.81.1; org.bouncycastle:bcprov-jdk15to18: 1.81.1; org.bouncycastle:bcprov-jdk18on: 1.81.1; org.bouncycastle:bcprov-jdk14: 1.84; org.bouncycastle:bcprov-jdk15to18: 1.84; org.bouncycastle:bcprov-jdk18on: 1.84. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-c3fc-8qff-9hwx (opens a new tab)

What happened

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.

Issue affecting: BC 1.74 to 1.80.1, BC 1.81, BC 1.82 to BC 1.83.

Fixed versions: BC 1.80.2, BC 1.81.1, BC 1.84

Affected package ranges reported by GitHub: org.bouncycastle:bcprov-jdk14: >= 1.74, < 1.80.2 org.bouncycastle:bcprov-jdk15to18: >= 1.74, < 1.80.2 org.bouncycastle:bcprov-jdk18on: >= 1.74, < 1.80.2 org.bouncycastle:bcprov-jdk14: >= 1.81, < 1.81.1 org.bouncycastle:bcprov-jdk15to18: >= 1.81, < 1.81.1 org.bouncycastle:bcprov-jdk18on: >= 1.81, < 1.81.1 org.bouncycastle:bcprov-jdk14: >= 1.82, < 1.84 org.

Continue reading

bouncycastle:bcprov-jdk15to18: >= 1.82, < 1.84 org.bouncycastle:bcprov-jdk18on: >= 1.82, < 1.84

Scores and how they were measured

CVSS base severity

5.5

Version 4.0As of

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/RE:M/U:Amber

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-c3fc-8qff-9hwx (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-c3fc-8qff-9hwx, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 4). Bouncy Castle has an LDAP injection (CVE-2026-0636). https://kevwire.com/record/CVE-2026-0636

MLA

"Bouncy Castle has an LDAP injection (CVE-2026-0636)." KEVWire, 4 Nov. 2026, kevwire.com/record/CVE-2026-0636.

Chicago

KEVWire. "Bouncy Castle has an LDAP injection (CVE-2026-0636)." Last modified November 4, 2026. https://kevwire.com/record/CVE-2026-0636.

Evidence summary (plain text)

Bouncy Castle has an LDAP injection (Apr 17, 2026).
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.

Issue affecting: BC 1.74 to 1.80.1, BC 1.81, BC 1.82 to BC 1.83.

Fixed versions: BC 1.80.2, BC 1.81.1, BC 1.84
CVSS 5.5 (version 4.0; evidence as of Nov 4, 2026; https://github.com/advisories/GHSA-c3fc-8qff-9hwx).
Sources:
GitHub-reviewed advisory GHSA-c3fc-8qff-9hwx: https://github.com/advisories/GHSA-c3fc-8qff-9hwx
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
Record ID: CVE-2026-0636.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Nov 4, 2026, 04:15 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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Record details

Record detail