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CVE-2015-2964

15
FAUCET Score

CVE-2015-2964 describes a signature bypass vulnerability in NAMSHI | JOSE versions 5.0.0 and earlier, affecting the namshi/jose product. This flaw allows remote attackers to bypass signature verification by submitting crafted tokens within JSON Web Tokens (JWT) headers. The vulnerability has a CVSS score of 5.0 (Medium), indicating a network-based attack with low complexity, requiring no authentication, and primarily impacting integrity (partial). There is no evidence of active exploitation, and it is not listed in the KEV catalog. Currently, there are no known public exploits available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting low public awareness and a lack of widespread attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0.0CPE matchmatch criteria
cpe:2.3:a:namshi:namshi\/jose:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0138 is in the 51st percentile among its peer group of 23,690 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvndb.jvn.jp / jvndb/JVNDB-2015-000090
Vendor Advisory
jvn.jp / en/jp/JVN25336719/index.html
Vendor Advisory
securityfocus.com / bid/75423