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Fencer Vulns
medium 4.3

CVE-2025-65922 json

PLANKA 2.0.0 lacks X-Frame-Options and CSP frame-ancestors headers, allowing the application to be embedded within malicious iframes.

published 2026-01-05 10 mo ago modified 2026-11-04 4 d ago also EUVD-2026-0827

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

PLANKA 2.0.0 lacks X-Frame-Options and CSP frame-ancestors headers, allowing the application to be embedded within malicious iframes. While this does not lead to unintended modification of projects or tasks, it exposes users to Phishing attacks. Attackers can frame the legitimate Planka application on a malicious site to establish false trust (UI Redressing), potentially tricking users into entering sensitive information or credentials into overlaid fake forms. NOTE: this is disputed by the Supplier because "PLANKA uses SameSite=Strict cookies, preventing authentication in cross-origin contexts. No session can be established. No credential interception or unauthorized actions are possible. Browser Same-Origin Policy prevents the parent page from accessing iframe content. Clickjacking is not applicable on the login page. Any credential capture would require attacker-controlled input and user interaction equivalent to phishing. The security outcome depends entirely on the user's trust in the parent page. An attacker can achieve the same effect with a fully fake login page. Embedding the legitimate page adds no risk, as browsers do not show URL, certificate, or padlock indicators in cross-origin iframes."

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
10 mo ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Classification

Weakness
  • CWE-1021 Improper Restriction of Rendered UI Layers or Frames

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.