Skip to content
Fencer Vulns
high 7.5

CVE-2026-59645 json

OER parser recurses without depth limit on self-referential IEEE 1609.2 schema

published 2026-08-03 3 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-52029

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

In Bouncy Castle for Java before 1.85, OER parser recurses without depth limit on self-referential IEEE 1609.2 schema. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcutil-fips 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).

Patch / fix

  • Legion of the Bouncy Castle Inc. BC-JAVA 1.85
  • Legion of the Bouncy Castle Inc. BC-LTS-JAVA 2.73.12
  • Legion of the Bouncy Castle Inc. BC-FJA 2.0.7, 2.1.7
  • bouncycastle Debian 14 1.86-1

debian advisories DEBIAN-CVE-2026-59645

  • bouncycastle SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 1.85-150200.3.38.1
  • bouncycastle SLES 16.0, SLES for SAP applications 16.0 1.85-160000.1.1

suse advisories SUSE-SU-2026:3559-1SUSE-SU-2026:23127-1SUSE-SU-2026:23150-1

  • bouncycastle openSUSE Leap 16.0 1.85-160000.1.1
  • bouncycastle openSUSE Tumbleweed 1.85-1.1

opensuse advisories openSUSE-SU-2026:21538-1openSUSE-SU-2026:11445-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-59645 updated cvss 7.5

org.bouncycastle/bcprov-jdk15on: org.bouncycastle/bcutil-fips: Bouncy Castle for Java: Denial of Service via OER parser unbounded recursion

  • Red Hat AMQ Broker 7 bcprov-jdk18on Red Hat build of Apache Camel for Spring Boot 4 bcpkix-jdk18on, bcprov-jdk18on, bcutil-jdk18on Red Hat build of Apicurio Registry 3 bcprov-lts8on
    affected: workaround, no fix available
  • Red Hat Ceph Storage 9 libarrow, parquet-libs
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 9 jmc
    affected: workaround, no fix available
  • Red Hat Fuse 7 bcpg-jdk15on, bcpg-jdk18on, bctls-jdk18on, bcmail-jdk15on, bcmail-jdk18on, bcpkix-jdk15on, +7 more Red Hat JBoss Enterprise Application Platform 7 bcpg-jdk15on, bcpg-jdk18on, bcmail-jdk15on, bcmail-jdk18on, bcpkix-jdk15on, bcpkix-jdk18on, +6 more
    affected: workaround, no fix available “Fix deferred”
  • Red Hat JBoss Enterprise Application Platform 8 bcpg-jdk18on, bcpkix-jdk18on, bcprov-jdk18on, bcutil-jdk18on, bcjmail-jdk18on
    affected: workaround, no fix available
  • Red Hat Single Sign-On 7 bcpg-jdk18on, bcmail-jdk18on, bcpkix-jdk18on, bcprov-jdk18on, bcutil-jdk18on, bcprov-jdk15on 1.69
    affected: workaround, no fix available “Fix deferred”
  • Red Hat AMQ Broker 7 bcpkix-jdk18on, bcutil-jdk18on Red Hat AMQ Clients bcprov-jdk15on 1.69 Red Hat build of Apache Camel 4 for Quarkus 3 bcpg-jdk18on, bcpkix-jdk18on, bcprov-jdk18on, bcutil-jdk18on
    not affected: vulnerable code not present
  • Red Hat Build of Keycloak bcpkix-jdk18on, bcprov-jdk18on, bcutil-jdk18on, rhbk/keycloak-rhel9
    not affected: vulnerable code cannot be controlled by adversary
show 2 more
  • Red Hat build of Quarkus bcpkix-jdk18on, bcprov-jdk18on, bcutil-jdk18on Red Hat Enterprise Linux 8 resteasy, resteasy-javadoc Red Hat Enterprise Linux 9 resteasy, pki-resteasy-core, pki-resteasy-client, pki-resteasy-jackson2-provider, pki-resteasy-servlet-initializer
    not affected: vulnerable code not present
  • Red Hat JBoss Enterprise Application Platform Expansion Pack bcpg-jdk18on, bcpkix-jdk18on, bcprov-jdk18on, bcutil-jdk18on, bcjmail-jdk18on
    not affected: component not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Amber
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Legion of the Bouncy Castle Inc. BC-JAVA
  • Legion of the Bouncy Castle Inc. BC-LTS-JAVA
  • Legion of the Bouncy Castle Inc. BC-FJA

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.