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BuddyForms <= 2.10.5 - Unauthenticated Stored Cross-Site Scripting via 'bf_post_type' Parameter via Post-Type Confusion

5.4MediumCNA
Exploited
No known exploitation
Fix
No fix listed
Who is exposed
Not reported
Published
Last modified
27/100 · provisional
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

Unauthenticated attackers can remotely inject malicious scripts into BuddyForms, a WordPress form plugin, through a stored cross-site scripting flaw, so the scripts run in the browsers of users who visit the injected pages. The attack needs a public BuddyForms form on the site and a theme with a widgetized sidebar.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

The BuddyForms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'bf_post_type (and buddyforms_form_content)' parameter in all versions up to, and including, 2.10.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that at least one BuddyForms form with public submissions enabled exists on the site (so that the required nonce can be harvested from the public form page) and that the active theme registers a widgetized sidebar, allowing the injected customize_changeset to place a malicious Custom HTML widget into the site's front end.

cve.now Index

27Pcve.now Index 27 of 100 · methodology v3 · provisional
  • Exploitation0/40No signal
  • Exposure17/25No login or user action needed per the CVSS vector, reachable over the network without a login · Unknown: No advisory context yet
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity5.4/10CVSS 5.4
  • No patch5/5No patch listed yet

What would change the score

  • Would score about 72 if added to CISA KEV
  • Would score about 67 if CISA's SSVC rates exploitation active
  • Would score about 32 if advisories confirm default setups are exposed

Timeline

  1. CVE published
  2. First seen by cve.now
  3. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  4. Record last updated

Affected versions

  • themekraft BuddyForms

    through 2.10.5

Evidence 9

  1. Repository
  2. Link
  3. Link
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  5. Link
Show all 9 sourcesShow fewer sources
  1. Link
  2. Link
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  4. Link

Corrections

None so far.

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Questions about CVE-2026-107658

Is CVE-2026-107658 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-107658?

BuddyForms: through 2.10.5.Source: cve.now feed data