01 Record

CVE-2018-25160

HTTP::Session2 versions through 1.09 for Perl does not validate the format of user provided session ids, enabling code injection or other impact depending on session backend

MediumPUBLISHEDCNA: CPANSec

CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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02 Description

HTTP::Session2 versions through 1.09 for Perl does not validate the format of user provided session ids, enabling code injection or other impact depending on session backend

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

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 38.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

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

2026-02-27 20:15Z8 MO AGO

Last updated

2026-03-03 20:22Z7 MO AGO

Reserved

2026-02-26

Assigning CNA

CPANSec

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

CWE-20Improper Input ValidationClass

Data version

5.2

Document digest

77782e0baf126dbaa6bebcc3b07faabe87789421cbadd2ce893ac13c46094be6

05 Affected products

VendorProductVersionsPlatforms

TOKUHIROMHTTP::Session20 to 1.09—

06 References

github.comhttps://github.com/tokuhirom/HTTP-Session2/commit/813838f6d08034b6a265a70e53b59b941b5d3e6d.patchpatch
metacpan.orghttps://metacpan.org/release/TOKUHIROM/HTTP-Session2-1.10/source/Changesrelease-notes
metacpan.orghttps://metacpan.org/pod/Cache::Memcached::Fast::Saferelated
www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/02/27/13

07 Remediation

HTTP::Session2 has been deprecated since version 1.11, users are recommended to migrate to a different solution.