01 Record

CVE-2026-82309

Robots::Validate versions from 0.3.2 before 0.3.11 for Perl allow unbounded outbound DNS queries per validation via a forward-confirmation loop that does not bound the names it queries

MediumPUBLISHEDCNA: CPANSec

CNA base score4.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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02 Description

Robots::Validate versions from 0.3.2 before 0.3.11 for Perl allow unbounded outbound DNS queries per validation via a forward-confirmation loop that does not bound the names it queries

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.37% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 30.9% of scored records. A rank, not a probability.

NVD base score

4.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

NVD analysis status

Deferred. NVD last modified this record on 2026-09-08.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-09-04 12:21Z1 MO AGO

Last updated

2026-09-08 18:56Z1 MO AGO

Reserved

2026-08-28

Assigning CNA

CPANSec

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weaknesses

CWE-405Asymmetric Resource Consumption (Amplification)Class
CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.2

Document digest

b52e6275fc9a17fcf2df19a8feaaa4c42dd4f364da9aad7b027f40e3216e2907

05 Affected products

No products listed

This record names no affected vendor or product. That is common for reserved identifiers and for records whose CNA published only a narrative description.

06 References

github.comhttps://github.com/robrwo/Robots-Validate/security/advisories/GHSA-6399-5qhh-48h5vendor-advisory
github.comhttps://github.com/robrwo/Robots-Validate/commit/6426178c49ff6c440922f31a92a6feb3c661b143.patchpatch
metacpan.orghttps://metacpan.org/release/RRWO/Robots-Validate-v0.4.0/changesrelease-notes
www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/09/04/3

07 Remediation

Upgrade to Robots-Validate 0.3.11 or later.