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CVE-2019-1010263

29
FAUCET Score

CVE-2019-1010263 describes an Incorrect Access Control vulnerability in Perl Crypt::JWT versions prior to 0.023, specifically affecting the JWT.pm component. This critical vulnerability, with a CVSS score of 9.8, allows unauthenticated attackers to bypass authentication by crafting a malicious JWT using hmac() over the network, leading to high impact on confidentiality, integrity, and availability. Despite its severity, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.023CPE matchmatch criteria
cpe:2.3:a:perl_crypt\:\:jwt_project:perl_crypt\:\:jwt:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.31%
Probability of exploitation in next 30 days
EPSS Percentile
67.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0131 is in the 54th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / DCIT/perl-Crypt-JWT/commit/b98a59b42ded9f9e51b2560410106207c2152d6c
PatchThird Party Advisory
openwall.com / lists/oss-security/2018/09/07/1
ExploitMailing ListThird Party Advisory