CVE-2025-59948: FreshRSS is a free, self-hostable RSS aggregator

Q: How do I fix CVE-2025-59948?

freshrss: upgrade to 1.27.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-59948 being exploited?

CVE-2025-59948 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-59948 affect?

CVE-2025-59948 affects freshrss. Severity is medium (CVSS 6.7). FreshRSS is a free, self-hostable RSS aggregator. Versions 1.26.3 and below do not sanitize certain event handler attributes in feed content, so by finding a page that renders feed entries without CSP, it is possible to execute an XSS paylo

Q: How urgent is CVE-2025-59948?

Priority 35/100. Public exploit reference

Routine

MEDIUM 6.7UPGRADE

CVE-2025-59948 is a medium-severity flaw (CVSS 6.7) affecting freshrss. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FreshRSS is a free, self-hostable RSS aggregator. Versions 1.26.3 and below do not sanitize certain event handler attributes in feed content, so by finding a page that renders feed entries without CSP, it is possible to execute an XSS payload. The Allow API access authentication setting needs to be enabled by the instance administrator beforehand for the attack to work as it relies on api/query.php. An account takeover is possible by sending a ch

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.7 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-09-29
Last modified	2026-10-19

Publisher (CNA): GitHub, Inc. · Vendor: freshrss

Last updated 2026-10-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-29 23:15 UTCPublished CVE record published
2026-10-19 16:10 UTCUpdated Record last modified

freshrss freshrss UPGRADE

Affected: < 1.27.0

Fixed in: 1.27.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy freshrss || rpm -q freshrss || freshrss --version

2. UPGRADE to 1.27.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade freshrss

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade freshrss

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-59948?

freshrss: upgrade to 1.27.0. Exact commands for each OS are on this page.

Is CVE-2025-59948 being exploited?

CVE-2025-59948 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-59948 affect?

CVE-2025-59948 affects freshrss. Severity is medium (CVSS 6.7). FreshRSS is a free, self-hostable RSS aggregator. Versions 1.26.3 and below do not sanitize certain event handler attributes in feed content, so by finding a page that renders feed entries without CSP, it is possible to execute an XSS paylo

How urgent is CVE-2025-59948?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-61586 MEDIUM 5.3 UPGRADE FreshRSS is a free, self-hostable RSS aggregator
CVE-2025-54592 CRITICAL 9.8 UPGRADE FreshRSS is a free, self-hostable RSS aggregator
CVE-2025-54875 CRITICAL 9.8 UPGRADE FreshRSS is a free, self-hostable RSS aggregator
CVE-2025-54591 HIGH 7.5 UPGRADE FreshRSS is a free, self-hostable RSS aggregator
CVE-2025-59950 MEDIUM 6.7 UPGRADE FreshRSS is a free, self-hostable RSS aggregator

References

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