CVE-2026-59649
published 2026-08-03CVE-2026-59649: In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. This issue also affects Bouncy Castle for Java…
PriorityP344high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.31%
23.5th percentile
In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| bouncycastle | bc-java | < 1.85 | 1.85 |
| bouncycastle | bcpg-fips | < 1.0.13 | 1.0.13 |
| bouncycastle | bcpg-fips | >= 2.0.8 < 2.0.13 | 2.0.13 |
| bouncycastle | bcpg-fips | >= 2.1.10 < 2.1.13 | 2.1.13 |
| bouncycastle | bouncy_castle_for_java_lts | <= 2.73.11 | — |
| jboss-eap-7 | eap74-els-openjdk11-openshift-rhel8 | — | — |
| jboss-eap-7 | eap74-els-openjdk17-openshift-rhel8 | — | — |
| jboss-eap-7 | eap74-els-openjdk8-openshift-rhel8 | — | — |
| jenkins | jenkins | — | — |
| legion_of_the_bouncy_castle_inc | bc-fja | >= 1.0.0 < 1.0.13 | 1.0.13 |
| legion_of_the_bouncy_castle_inc | bc-fja | >= 2.0.0 < 2.0.13 | 2.0.13 |
| legion_of_the_bouncy_castle_inc | bc-fja | >= 2.1.0 < 2.1.13 | 2.1.13 |
| legion_of_the_bouncy_castle_inc | bc-java | < 1.85 | 1.85 |
| legion_of_the_bouncy_castle_inc | bc-lts-java | >= 2.73.0 < 2.73.12 | 2.73.12 |
| ocp-tools-4 | jenkins-rhel8 | — | — |
| ocp-tools-4 | jenkins-rhel9 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.08.7HIGHCVSS: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
vendor_redhat8.7HIGH
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VulDB
Legion of the Bouncy Castle BC-JAVA/BC-LTS-JAVA/BC-FJA prior 1.85/2.73.12/1.0.13/2.0.13/2.1.13 input validation
vuldb·2026-08-03·CVSS 8.7
CVE-2026-59649 [HIGH] Legion of the Bouncy Castle BC-JAVA/BC-LTS-JAVA/BC-FJA prior 1.85/2.73.12/1.0.13/2.0.13/2.1.13 input validation
A vulnerability classified as problematic has been found in Legion of the Bouncy Castle BC-JAVA, BC-LTS-JAVA and BC-FJA. This issue affects some unknown processing. The manipulation leads to improper input validation.
This vulnerability is listed as CVE-2026-59649. The attack may be initiated remotely. There is no available exploit.
It is recommended to upgrade the affected component.
GHSA
In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory.
ghsa_unreviewed·2026-08-03
CVE-2026-59649 [HIGH] CWE-789 In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory.
In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).
Red Hat
org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length
vendor_redhat·2026-08-03·CVSS 8.7
CVE-2026-59649 [HIGH] CWE-770 org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length
org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length
In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).
A flaw was found in Bouncy Castle for Java. The software's processing of OpenPGP user-attribute subpackets does not properly limit their length, bounding them only by the Java Virtual Machine (JVM) maximum memory. A remote attacker could exploit this by sending a specially crafted OpenPGP message, le
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-59649 apache-sshd: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length [fedora-all]
bugzilla·2026-08-25·CVSS 8.7
CVE-2026-59649 [HIGH] CVE-2026-59649 apache-sshd: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length [fedora-all]
CVE-2026-59649 apache-sshd: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).
Bugzilla
CVE-2026-59649 org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket len
bugzilla·2026-08-03·CVSS 8.7
CVE-2026-59649 [HIGH] CVE-2026-59649 org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket len
CVE-2026-59649 org.bouncycastle/bcpg-fips: org.bouncycastle/bcpg-jdk15on: org.bouncycastle/bcpg-jdk18on: Bouncy Castle for Java: Denial of Service due to unbounded OpenPGP user-attribute subpacket length
In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).
2026-08-03
Published