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CVE-2026-72756— Routinator exits on malformed rsync URIs

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.

当通过 RRDP 获取的文件的 rsync URI 包含无法在磁盘上存储的路径时（例如文件名过长，或文件夹名称与现有文件名冲突），Routinator 将退出运行。

CVSS 7.5 · High EPSS 0.40% · P34

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
NLnet Labs Routinator 0.15.3< * unaffected
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I. Basic Information for CVE-2026-72756

Vulnerability Information
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Vulnerability Title
Routinator exits on malformed rsync URIs
Source: CVE Program / CVE List V5
Vulnerability Description
Routinator exits when an rsync URI for a file obtained over RRDP contains a path that cannot be stored on disk, such as too long file names, and folder names that overlap with existing file names.
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-2026-72756

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-72756

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Vendor Advisories for CVE-2026-72756 (1)

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

CVE-2026-72753 8.2 HIGH Routinator incorrectly handles delta updates
CVE-2026-72754 7.5 HIGH Routinator exits when parsing an incorrect or very large CRL file
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