CVE-2026-41081: Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Sto

Q: How do I fix CVE-2026-41081?

storm: upgrade to 2.8.7. Exact commands for each OS are on this page.

Q: Is CVE-2026-41081 being exploited?

CVE-2026-41081 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-41081 affect?

CVE-2026-41081 affects storm. Severity is medium (CVSS 6.5). Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm Versions Affected: up to 2.8.7 Description: When TLS transport is enabled in Apache Storm without requiring client certificat

Q: How urgent is CVE-2026-41081?

Priority 38/100. Remotely exploitable, no login, no user action; On your watchlist

Routine

MEDIUM 6.5REMOTEWATCHLISTUPGRADE

CVE-2026-41081 is a medium-severity flaw (CVSS 6.5) affecting storm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm Versions Affected: up to 2.8.7 Description: When TLS transport is enabled in Apache Storm without requiring client certificate authentication (the default configuration), the TlsTransportPlugin assigns a fallback principal (CN=ANONYMOUS) if no client certificate is presented or if certificate verification fails. The underlying SSLPee

Why this priority

Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-287
Published	2026-04-27
Last modified	2026-10-26

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-27 14:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

apache storm UPGRADE

Affected: < 2.8.7

Fixed in: 2.8.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy storm || rpm -q storm || storm --version

2. UPGRADE to 2.8.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade storm

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade storm

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41081?

storm: upgrade to 2.8.7. Exact commands for each OS are on this page.

Is CVE-2026-41081 being exploited?

CVE-2026-41081 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41081 affect?

CVE-2026-41081 affects storm. Severity is medium (CVSS 6.5). Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm Versions Affected: up to 2.8.7 Description: When TLS transport is enabled in Apache Storm without requiring client certificat

How urgent is CVE-2026-41081?

Priority 38/100. Remotely exploitable, no login, no user action; On your watchlist

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References

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