Loading vulnerability…
CVE-2023-27351 is an improper authentication vulnerability in PaperCut NG and PaperCut MF. The flaw resides in the SecurityRequestFilter class, where the authentication algorithm is improperly implemented. A remote unauthenticated attacker can bypass authentication on an affected PaperCut Application Server and access information otherwise protected by authentication controls. Affected releases include PaperCut NG/MF version 15.0 and later before the applicable fixed release.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
49 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An earlier PaperCut vulnerability referenced as having been linked to LockBit ransomware operations.
A high-severity PaperCut information-disclosure vulnerability exploited with CVE-2023-27350 in 2023 attacks.
A high-severity PaperCut information-disclosure vulnerability that was chained with CVE-2023-27350 in 2023 attacks.
A historical PaperCut remote-code-execution vulnerability referenced as part of the 2023 PaperCut pre-authentication RCE chain and as context for likely attacker interest in the 2026 vulnerabilities.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.