CVE-2025-30160: redlib DoS — Fix

Description

Redlib is an alternative private front-end to Reddit. A vulnerability has been identified in Redlib where an attacker can cause a denial-of-service (DOS) condition by submitting a specially crafted base2048-encoded DEFLATE decompression bomb to the restore_preferences form. This leads to excessive memory consumption and potential system instability, which can be exploited to disrupt Redlib instances. This vulnerability is fixed in 0.36.0.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-502 Deserialization of Untrusted Data

Affected Products

Vendor	Product	Versions
redlib	redlib	< 0.36.0

References

Advisories & Patches

https://github.com/redlib-org/redlib/commit/15147cea8e42f6569a11603d661d71122f6a02dc https://github.com/redlib-org/redlib/commit/2e95e1fc6e2064ccfae87964b4860bda55eddb9a https://github.com/redlib-org/redlib/security/advisories/GHSA-g8vq-v3mg-7mrg

Frequently Asked Questions

What is CVE-2025-30160? +

Redlib is an alternative private front-end to Reddit. A vulnerability has been identified in Redlib where an attacker can cause a denial-of-service (DOS) condition by submitting a specially crafted base2048-encoded DEFLATE decompression bomb to the restore_preferences form. This leads to excessive memory consumption and potential system instability, which can be exploited to disrupt Redlib instances. This vulnerability is fixed in 0.36.0. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-30160? +

CVE-2025-30160 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-30160? +

CVE-2025-30160 affects products from redlib, specifically: redlib. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-30160? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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