CVE-2026-14741 (GCVE-0-2026-14741)
Vulnerability from cvelistv5
Published
2026-07-17 15:20
Modified
2026-08-12 18:47
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Summary
HTTP::Date versions before 6.08 for Perl allow CPU exhaustion via polynomial regex backtracking in parse_date. parse_date() matches the date string against a chain of alternative regexes, and str2time() delegates to it. Several of these patterns place unbounded quantifiers next to each other before a trailing `\s*$` anchor. A valid date prefix followed by a long interior run of digits, letters, or whitespace and a single trailing byte that defeats the final match forces the engine to repartition the run, giving polynomial (about quadratic) backtracking. A header value of a few tens of kilobytes runs for tens of seconds of CPU. HTTP::Date parses timestamps such as HTTP `Date`, `Expires`, and `Last-Modified` headers, which commonly originate from untrusted sources. Any caller that passes an untrusted date header to str2time() or parse_date() can be driven to consume unbounded CPU, a denial of service.
Impacted products
Vendor Product Version
OALDERS HTTP::Date Version: 0   < 6.08
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Show details on NVD website


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