CVE-2026-87768— DateTime::Lite versions before 0.8.1 for Perl allow CPU exhaustion via a per-day loop when adding seconds

Quick assessment

Affected

CVE-2026-87768

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Perl 语言中 DateTime::Lite 模块在 0.8.1 版本之前存在 CPU 耗尽漏洞。当对具有非浮动时区的对象执行操作时，函数会以每天为单位逐步跨越日期边界，导致该操作需要执行约次迭代，且对的值没有任何限制。无论是 XS 实现还是纯 Perl 回退实现，均包含此循环。若攻击者能够控制所添加的秒数，即可使进程长时间处于繁忙状态，从而造成拒绝服务。

AI Predicted 5.9 Difficulty: Easy Updated Oct 30, 2026

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood

Affected Version Matrix 1

Vendor	Product	Version Range	Status
None	None	`< 0.8.1`	affected

Updated Oct 30, 2026

Vulnerability Information

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Vulnerability Title

DateTime::Lite versions before 0.8.1 for Perl allow CPU exhaustion via a per-day loop when adding seconds

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

N/A

Source: CVE Program / CVE List V5

Vulnerability Type

算法复杂性

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
-	-	0 ~ 0.8.1	-

II. Public POCs for CVE-2026-87768

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-87768

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Other References for CVE-2026-87768 (1)

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

https://www.cve.org/CVERecord?id=CVE-2026-87768

IV. Related Vulnerabilities

Same weakness: CWE-407