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Public proof of conceptFix available

CVE-2020-25787

A public proof of concept exists; no exploitation attested.

  • Published2020-09-19
  • Fixed in2020-09-16
  • WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in Tiny Tiny RSS (aka tt-rss) before 2020-09-16. It does not validate all URLs before requesting them.

Timeline

dates in UTC
  1. 2021-03-02Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-25787?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-25787?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Tt-rss tiny tiny rss
BranchAffectedFixed in
2020.x< 2020-09-162020-09-16

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • tt-rssUbuntu:24.04:LTSall versions · no fixed version listed
  • tt-rssUbuntu:22.04:LTSall versions · no fixed version listed
  • tt-rssUbuntu:18.04:LTSall versions · no fixed version listed
  • tt-rssUbuntu:16.04:LTSall versions · no fixed version listed
  • tt-rssDebian:12all versions · fixed in 21~git20210204.b4cbc79+dfsg-1

Full record on NVD

Fix

  1. Update Tt-rss tiny tiny rss to 2020-09-16

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-49606
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-09-19
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8966-pp95-9j6j

Frequently asked questions

What is CVE-2020-25787?

An issue was discovered in Tiny Tiny RSS (aka tt-rss) before 2020-09-16. It does not validate all URLs before requesting them.

Is CVE-2020-25787 actively exploited?

Active exploitation of CVE-2020-25787 has not been confirmed. Its EPSS score was 18.4% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-25787?

CVE-2020-25787 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

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Sources for this record