CVE-2026-35337
Description
Deserialization of Untrusted Data vulnerability in Apache Storm.
Versions Affected: before 2.8.6.
Description: When processing topology credentials submitted via the Nimbus Thrift API, Storm deserializes the base64-encoded TGT blob using ObjectInputStream.readObject() without any class filtering or validation. An authenticated user with topology submission rights could supply a crafted serialized object in the "TGT" credential field, leading to remote code execution in both the Nimbus and Worker JVMs.
Mitigation: 2.x users should upgrade to 2.8.6.
Users who cannot upgrade immediately should monkey-patch an ObjectInputFilter allow-list to ClientAuthUtils.deserializeKerberosTicket() restricting deserialized classes to javax.security.auth.kerberos.KerberosTicket and its known dependencies. A guide on how to do this is available in the release notes of 2.8.6.
Credit: This issue was discovered by K.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.apache.storm:storm-clientMaven | < 2.8.6 | 2.8.6 |
Affected products
2Patches
Vulnerability mechanics
References
4- www.openwall.com/lists/oss-security/2026/04/12/6nvdMailing ListThird Party AdvisoryWEB
- github.com/advisories/GHSA-jf89-3q6q-vcgrghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-35337ghsaADVISORY
- storm.apache.org/2026/04/12/storm286-released.htmlnvdRelease NotesVendor AdvisoryWEB
News mentions
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