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CVE-2026-72754— Routinator exits when parsing an incorrect or very large CRL file

Quick assessment

Affected

NLnet Labs Routinator

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.

当 Routinator 遇到包含大量条目的证书吊销列表（CRL）时，可能会陷入挂起状态或耗尽内存。如果 Routinator 遇到编码错误的 CRL 文件，则可能会直接退出。

CVSS 7.5 · High EPSS 0.40% · P34 Updated Oct 27, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

Vendor	Product	Version Range	Status
NLnet Labs	Routinator	`0.15.3< *`	unaffected

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Vulnerability Information

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Vulnerability Title

Routinator exits when parsing an incorrect or very large CRL file

Source: CVE Program / CVE List V5

Vulnerability Description

When Routinator encounters a CRL with many entries, it may hang or run out of memory. If Routinator encounters a CRL file with the wrong encoding, it may exit.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

对异常条件的处理不恰当

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
NLnet Labs	Routinator	0.15.3 ~ *	-

II. Public POCs for CVE-2026-72754

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-72754

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Vendor Advisories for CVE-2026-72754 (1)

🔗 https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72754.txt vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-72754

Same Patch Batch · NLnet Labs · 2026-10-26 · 7 CVEs total

CVE-2026-72753	8.2 HIGH	Routinator incorrectly handles delta updates
CVE-2026-72756	7.5 HIGH	Routinator exits on malformed rsync URIs
CVE-2026-72758	7.5 HIGH	Routinator may exit on malformed ranges
CVE-2026-72752	6.5 MEDIUM	Routinator exits when requesting the output repeatedly
CVE-2026-72757	5.3 MEDIUM	Routinator HTTP server becomes unavailable with many unclosed connections
CVE-2026-72755	3.8 LOW	Routinator stores TA certificate in cache without validation

IV. Related Vulnerabilities

Same product: Routinator

Same vendor: NLnet Labs

Same weakness: CWE-755