CVE-2015-2964: NAMSHI | JOSE 5.0.0 and earlier allows remote attackers to bypass signature verification via crafted tokens in

Q: How do I fix CVE-2015-2964?

namshi\/jose: upgrade to newer than 5.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2015-2964 being exploited?

CVE-2015-2964 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-2015-2964 affect?

CVE-2015-2964 affects namshi\/jose. Severity is medium (CVSS 5.0). NAMSHI | JOSE 5.0.0 and earlier allows remote attackers to bypass signature verification via crafted tokens in a JSON Web Tokens (JWT) header.

Q: How urgent is CVE-2015-2964?

Priority 35/100. No elevated risk signals yet.

Routine

MEDIUM 5.0UPGRADE

CVE-2015-2964 is a medium-severity flaw (CVSS 5.0) affecting namshi\/jose. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NAMSHI | JOSE 5.0.0 and earlier allows remote attackers to bypass signature verification via crafted tokens in a JSON Web Tokens (JWT) header.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-20
Published	2015-07-05
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: namshi

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-07-05 01:59 UTCPublished CVE record published
2026-06-17 00:25 UTCUpdated Record last modified

namshi namshi\/jose UPGRADE

Affected: <= 5.0.0

Fixed in: newer than 5.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.0.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade namshijose

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-2015-2964?

namshi\/jose: upgrade to newer than 5.0.0. Exact commands for each OS are on this page.

Is CVE-2015-2964 being exploited?

CVE-2015-2964 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-2015-2964 affect?

CVE-2015-2964 affects namshi\/jose. Severity is medium (CVSS 5.0). NAMSHI | JOSE 5.0.0 and earlier allows remote attackers to bypass signature verification via crafted tokens in a JSON Web Tokens (JWT) header.

How urgent is CVE-2015-2964?

Priority 35/100. No elevated risk signals yet.

References

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