Security readout for executives and security teams
A Perl security middleware intended to block malicious request paths failed to catch some header-injection patterns before version 0.13.1. An unauthenticated internet request could potentially influence headers or routing behavior, but the sources say proxy and server handling is unclear. Exposure is likely limited to Perl Plack applications using Plack-Middleware-Security-Simple or Plack::Middleware::Security::Common before 0.13.1. Risk depends on whether fronting reverse proxies and Plack servers accept or normalize affected request paths. Treat as high priority for internet-facing Perl Plack services because exploitation requires no authentication or user interaction. Patch exposed services first, then validate proxy behavior where upgrade timing is constrained. Mitigation focus: Upgrade Plack-Middleware-Security-Simple to version 0.13.1 or later.; Inventory Perl Plack services using Plack::Middleware::Security::Common.; Check MetaCPAN release notes and vendor guidance for additional mitigation details..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-113: Exact CWE lookup
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Open ATT&CK lookupCWE-790: Exact CWE lookup
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Open ATT&CK lookupCredential and access behavior lookup
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Open ATT&CK lookupCVE-2026-9658 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L3.93.4CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://metacpan.org/release/RRWO/Plack-Middleware-Security-Simple-v0.13.1/changesCVE reference, CPANSec · release-notes
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.