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1 vulnerability found for HTTP::Date by OALDERS
CVE-2026-14741 (GCVE-0-2026-14741)
Vulnerability from cvelistv5
Published
2026-07-17 15:20
Modified
2026-08-12 18:47
Severity ?
VLAI Severity ?
EPSS score ?
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| OALDERS | HTTP::Date |
Version: 0 < 6.08 |
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"url": "https://metacpan.org/release/OALDERS/HTTP-Date-6.08/changes"
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