Vulnary
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Critical· 9.1

CVE-2026-59139

Data::ReqRep::Shared Perl modules before version 0.05 allow an attacker to read memory outside the intended buffer. The flaw occurs when the module copies data from a file without checking the offset and length, which can be manipulated by a local peer. This can expose sensitive data or crash the application.

publishedJul 21, 2026
last modifiedJul 22, 2026
sourcesNVD
severity · cvss
9.1
critical · how bad it is
exploitation · epss
<1%
28th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 5, 2026

No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.

01

Who is affected

Perl developers using Data::ReqRep::Shared modules older than version 0.05.

02

Real-world impact

An attacker who can write to the module’s backing file could read arbitrary memory contents or cause the program to terminate, potentially leaking confidential information or disrupting service.

03

Why this severity

The CVSS score of 9.1 reflects that the vulnerability is exploitable over the network, requires no privileges or user interaction, and can lead to complete loss of confidentiality and availability.

04

What to do about it

no official fix yet

No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.

No fix documented in sources

05

Timeline

06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactNone
Availability impactHigh
07

References & advisories

(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →