CVE-2026-8450

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 ImpacttotalSuccessful exploitation gives total 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

1.40% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 70.5% of scored records. A rank, not a probability.

NVD base score

9.1 (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:H/I:H/A:N

NVD analysis status

Deferred. NVD last modified this record on 2026-07-23.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

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.

Published

2026-05-27 04:22Z3 MO AGO

Last updated

2026-07-15 00:39Z1 MO AGO

Reserved

2026-05-12

Assigning CNA

CPANSec

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

• CWE-73External Control of File Name or PathBase
• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.2

Document digest

bd2d2509c44cefa9325722ef068939fd4dd36e05f45715c08a4acdd2bab45cd1

• github.comhttps://github.com/libwww-perl/HTTP-Daemon/pull/89issue-tracking
• github.comhttps://github.com/libwww-perl/HTTP-Daemon/commit/945d35141d94490f749640bd4390acd6a2193995.patchpatch
• metacpan.orghttps://metacpan.org/release/OALDERS/HTTP-Daemon-6.17/changesrelease-notes
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/05/27/5
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2026/06/msg00028.html
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-8450vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2481773https://bugzilla.redhat.com/show_bug.cgi?id=2481773issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8450.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:36189vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:36188vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:36187vendor-advisoryx_refsource_REDHAT