CVE-2020-35591
mediumpriority · track · 22EPSS 0.011 · 66 %ileEUUSEPSS · scored 2026-10-27
Pi-hole 5.0, 5.1, and 5.1.1 allows Session Fixation. The application does not generate a new session cookie after the user is logged in. A malicious user is able to create a new session cookie value and inject it to a victim. After the victim logs in, the injected cookie becomes valid, giving the attacker access to the user's account through the active session.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://discourse.pi-hole.net/c/announcements/5cnnvd
- https://discourse.pi-hole.net/t/pi-hole-ftl-v5-7-and-web-v5-4-released/44449Patchcnnvd
- https://n4nj0.github.io/advisories/pi-hole-multiple-vulnerabilities-i/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-35591cnnvd
- https://discourse.pi-hole.net/c/announcements/5enisa_euvd
- https://n4nj0.github.io/advisories/pi-hole-multiple-vulnerabilities-i/enisa_euvd
- https://discourse.pi-hole.net/c/announcements/5Release NotesVendor Advisorynvd
- https://n4nj0.github.io/advisories/pi-hole-multiple-vulnerabilities-i/ExploitThird Party Advisorynvd
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