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TI-2024-39153 Aliases CVE-2024-3586GHSA-vq6v-qjj6-f2p8

Stored cross-site scripting in LetterPress WordPress plugin

Priority LOW 16CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The LetterPress WordPress plugin before 2.4.0 does not sanitise and escape some of its settings, which is a cross-site scripting flaw (CWE-79). A high privilege user such as an admin can plant stored script that runs in other users' browsers, even when the unfiltered_html capability is disallowed, for example in a multisite setup. Exploiting it requires high privileges and user interaction, and the CVSS base score is 3.5 (low). An exploit link is listed in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

The LetterPress WordPress plugin before 2.4.0 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00173 6th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed LetterPress (Unknown): 2.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownLetterPressbefore 2.4.02.4.0Patch availableCNA
  • LetterPress VendorUnknown Affected before 2.4.0 Fixed in 2.4.0 Patch available CNA

Remediation

Update LetterPress to version 2.4.0 or later, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA LetterPress (Unknown) Fixed in 2.4.0

Timeline

  1. 2026-10-29 Threatist record created from CVE-2024-3586
  2. 2026-10-29 Alias added: GHSA-vq6v-qjj6-f2p8
  3. 2026-10-29 CVSS score added · CISA ADP
  4. 2026-10-29 Weakness changed · CISA ADP
  5. 2026-10-29 CISA SSVC decision points changed

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences