How severe is CVE-2020-25787?

CVE-2020-25787 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-25787 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25787?

CVE-2020-25787 affects Tt-rss Tiny Tiny Rss. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25787?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-25787 published?

CVE-2020-25787 was published on 2020-09-19 and last updated on 2026-06-17.

CVE-2020-25787

CVE-2020-25787 is a critical-severity vulnerability in Tt-rss Tiny Tiny Rss with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Tt-rss Tiny Tiny Rss
Published: 2020-09-19
Last modified: 2026-06-17

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.

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.
How severe is CVE-2020-25787?: CVE-2020-25787 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-25787 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25787?: CVE-2020-25787 affects Tt-rss Tiny Tiny Rss. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25787?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-25787 published?: CVE-2020-25787 was published on 2020-09-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tt-rss:tiny_tiny_rss:*:*:*:*:*:*:*:*

More vulnerabilities in Tt-rss Tiny Tiny Rss

CVE-2017-16896 — Critical (CVSS 9.8): A SQL injection in classes/handler/public.php in the forgotpass component of Tiny Tiny RSS 17.4 exists via the login…
CVE-2020-25788 — High (CVSS 8.1): An issue was discovered in Tiny Tiny RSS (aka tt-rss) before 2020-09-16. imgproxy in plugins/af_proxy_http/init.php…
CVE-2021-28373 — High (CVSS 7.5): The auth_internal plugin in Tiny Tiny RSS (aka tt-rss) before 2021-03-12 allows an attacker to log in via the OTP code…
CVE-2020-25789 — Medium (CVSS 6.1): An issue was discovered in Tiny Tiny RSS (aka tt-rss) before 2020-09-16. The cached_url feature mishandles JavaScript…
CVE-2017-1000035 — Medium (CVSS 6.1): Tiny Tiny RSS before 829d478f is vulnerable to XSS window.opener attack

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