Skip to main content
VulnerabilityPublished

CVE-2026-72574: picocms Pico · Improper Neutralization of HTTP Headers for Scripting Syntax

Affects picocms PicoSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 6.1 Medium : upgrade to 2.1.5 when convenient.

Data as of 7 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.1.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 7 Nov 2026.

What to do

Upgrade picocms/Pico to 2.1.5.

Affected software

ProductAffectedFixed in
picocmsPicoAffected
  • <=2.1.4
Fixed in–
GitHubpicocms/Picopkg:github/picocms/PicoOther threatsAffected
  • <2.1.5
Fixed in
  • 2.1.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, users should consider explicitly setting the base_url configuration to a trusted value to avoid reliance on unvalidated headers.

Description

CVE-2026-72574 is a host header injection vulnerability in picocms/Pico versions prior to 2.1.5. It allows an unauthenticated remote attacker to manipulate the origin of JavaScript and CSS assets loaded by the default theme by exploiting how the base URL is constructed from unvalidated HTTP headers when base_url is unset.

References

Community reviews

Loading reviews…