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CVE-2026-118993unknown

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

Impact

CallBackery for Perl, versions before 0.62.0, allows denial of service via a regular expression in the request path under CGI, FastCGI, and PSGI. An unauthenticated attacker can cause a worker process to be busy for minutes with a short request. The weakness is due to inefficient regular expression complexity.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

What to do

Upgrade to CallBackery 0.62.0 or later.

CPANSec guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Vendor not supplied · CPANSec

CallBackery

1 range
CPANSec version evidence

Package identity

pkg:cpan/CallBackery

Identity supplied by CPANSec. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 0.62.0

custom versions

unaffected

unknown

Other versions: unaffected

Original source description

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.

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.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-118993

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-1333 ↗

CWE-1333 Inefficient Regular Expression Complexity

CPANSec

Related →
Contributing organizations · 1
CPANSec

Assigning organization

2026-10-30

What changed

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References

1 sources
metacpan.org/release/OETIKER/CallBackery-0.62.0/changes
release-notesCPANSec