HOMEVULNERABILITIESCVE-2019-1010263
CRITICAL

CVE-2019-1010263

CWE-347Published: July 17, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Perl Crypt::JWT prior to 0.023 is affected by: Incorrect Access Control. The impact is: allow attackers to bypass authentication by providing a token by crafting with hmac(). The component is: JWT.pm, line 614. The attack vector is: network connectivity. The fixed version is: after commit b98a59b42ded9f9e51b2560410106207c2152d6c.

NVD Source

Technical Analysis

CVE-2019-1010263 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

perl_crypt\1 product(s)
\
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

PATCHhttps://github.com/DCIT/perl-Crypt-JWT/commit/b98a59b42ded9f9e51b2560410106207c2152d6c
PATCHhttps://github.com/DCIT/perl-Crypt-JWT/commit/b98a59b42ded9f9e51b2560410106207c2152d6c
ADVISORYhttps://www.openwall.com/lists/oss-security/2018/09/07/1
ADVISORYhttps://www.openwall.com/lists/oss-security/2018/09/07/1

All References (4)

→
https://github.com/DCIT/perl-Crypt-JWT/commit/b98a59b42ded9f9e51b2560410106207c2152d6cPatch · Third Party Advisory
→
https://www.openwall.com/lists/oss-security/2018/09/07/1Exploit · Mailing List · Third Party Advisory
→
https://github.com/DCIT/perl-Crypt-JWT/commit/b98a59b42ded9f9e51b2560410106207c2152d6cPatch · Third Party Advisory
→
https://www.openwall.com/lists/oss-security/2018/09/07/1Exploit · Mailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2019-1010263
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-347
CISA KEVNo
Affected1 vendor(s)
PublishedJul 17, 2019

Related CVEs (CWE-347)

CVE-2026-56451
10.0
CVE-2024-32962
10.0
CVE-2026-48558
KEV10.0
CVE-2026-44748
9.9
CVE-2018-8955
9.8
CVE-2025-9485
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-1010263 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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