CallBackery versions before 0.62.0 for Perl allow denial of service via the request path interpolated as a regular expression under CGI, FastCGI and PSGI

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-118993
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-30 13:18:32 UTC
Updated2026-10-30 17:08:54 UTC
DescriptionCallBackery versions before 0.62.0 for Perl allow denial of service via the request path interpolated as a regular expression under CGI, FastCGI and PSGI. The before_dispatch hook installed by startup() removes PATH_INFO from the end of the request URI with a substitution that interpolates PATH_INFO unquoted. Under CGI, FastCGI and PSGI both values come from the request, so the client chooses both the pattern and the string it is matched against. A short unauthenticated request with a backreference in the path backtracks exponentially and can keep a worker process busy for minutes.

Risk And Classification

Problem Types: CWE-1333 | CWE-1333 CWE-1333 Inefficient Regular Expression Complexity

References

ReferenceSourceLinkTags
metacpan.org/release/OETIKER/CallBackery-0.62.0/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to CallBackery 0.62.0 or later.

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