Skip to content
Fencer Vulns
medium 6.5

CVE-2026-57914 json

Apache Kerby: StackOverflow on parsing deeply nested ASN1 structures

published 2026-06-26 4 mo ago modified 2026-11-03 5 d ago also EUVD-2026-39648 , GHSA-x6vc-x4v4-hjhr

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

By sending a deeply nested ASN1 structure to a Apache Kerby client or service, it's possible to trigger a StackOverFlow Exception which can lead to denial of service issues. Users are recommended to upgrade to version 2.1.2, which fixes this issue.

Patch / fix

  • maven org.apache.kerby:kerby-asn1 2.1.2
  • Apache Software Foundation Apache Kerby 2.1.2

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-2026-57914 updated cvss 6.5

apache-kerby: org.apache.kerby/kerby-asn1: Apache Kerby: Denial of Service via deeply nested ASN.1 structure

  • Red Hat AMQ Clients kerby-asn1 Red Hat Build of Keycloak kerby-asn1, rhbk/keycloak-rhel9, rhbk-openshift-rhel9 Red Hat Data Grid 8 kerby-asn1 Red Hat Fuse 7 kerby-asn1 Red Hat JBoss Enterprise Application Platform Expansion Pack kerby-asn1 Red Hat OpenShift AI (RHOAI) rhoai/odh-spark-operator-rhel9, rhoai/odh-th06-cpu-torch210-py312-rhel9, rhoai/odh-th06-cpu-torch291-py312-rhel9, rhoai/odh-th06-rocm64-torch291-py312-rhel9, rhoai/odh-th06-cuda130-torch210-py312-rhel9, rhoai/odh-th06-cuda130-torch291-py312-rhel9
    +3 more products
    Red Hat Single Sign-On 7 kerby-asn1 Red Hat streams for Apache Kafka 2 kerby-asn1 Red Hat streams for Apache Kafka 3 kerby-asn1
    affected: workaround, no fix available “Fix deferred”

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
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.kerby:kerby-asn1
<2.1.2
2.1.2

Affected products

  • Apache Software Foundation Apache Kerby

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.