CVE-2026-115864: Monoceros (Perl module) · Excessive Memory Allocation
Affects Monoceros (Perl module)Source CVE Database V5
Not known to be exploited : upgrade to 0.30 soon.
Data as of 9 Nov 2026, 21:34 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in 0.30
Exploitation evidence
Disclosed: evidence found.
CVE published 9 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Upgrade Monoceros (Perl module) to 0.30.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Monoceros | Affected
| Fixed in
|
CPANMonocerospkg:cpan/MonocerosOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Monoceros to version 0.30 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data.
Description
Monoceros versions before 0.30 for Perl contain a vulnerability where a remote attacker can send a request with a large Content-Length header, causing the worker process to exhaust memory and crash. This occurs because the request body is read in a loop that attempts to allocate a buffer equal to the declared Content-Length before any data is received, leading to an uncatchable out-of-memory error. The issue is fixed in version 0.30.