CVE-2026-87768

High

Description

DateTime::Lite versions before 0.8.1 for Perl allow CPU exhaustion via a per-day loop when adding seconds. _normalize_leap_seconds crosses day boundaries one day at a time, so add(seconds => $n) on an object with a non-floating time zone takes about |$n|/86400 iterations, and nothing limits $n. The XS implementation and the pure-Perl fallback both have the loop. An attacker who controls the number of seconds added can keep the process busy for as long as they choose.

SeverityHigh

CVSS7.5

Exploit probability—

ProductDatetime-lite

PublishedOct 30, 2026

First seenNov 4, 2026

Weakness typeCWE-407CWE-407

How to fix

Update

DateTime-Lite0.8.1 or later

Vendor advisories

metacpan.org/release/JDEGUEST/DateTime-Lite-v0.8.1/changes

Affected products

Product	Affected versions	Fixed in
DateTime-Lite	v < 0.8.1	0.8.1

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