CVE-2023-45966

HIGH

remark42 < 1.12.1 - Server-Side Request Forgery via Newsletter Import URL Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-45966. PoCs published by jet-pentest.

AI-analyzed exploit summary This repository provides a detailed technical description of CVE-2023-45966, a Blind SSRF vulnerability in umputun/remark42 <= 1.12.1. The issue arises from insufficient filtering of the `url` field in comment creation requests, allowing malicious JSON input to trigger SSRF.

Description

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery (SSRF) vulnerability.

Exploits (1)

nomisec WRITEUP
by jet-pentest · poc
https://github.com/jet-pentest/CVE-2023-45966

This repository provides a detailed technical description of CVE-2023-45966, a Blind SSRF vulnerability in umputun/remark42 <= 1.12.1. The issue arises from insufficient filtering of the `url` field in comment creation requests, allowing malicious JSON input to trigger SSRF.

Classification
Writeup 90%
Attack Type
Ssrf
Complexity
Moderate
Reliability
Reliable
Target: umputun/remark42 <= 1.12.1
No auth needed
Prerequisites: Ability to send crafted JSON POST requests to the /api/v1/comment endpoint
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Issue Tracking, Third Party Advisory
https://github.com/umputun/remark42/issues/1677

Scores

CVSS v3 7.5
EPSS 0.0059
EPSS Percentile 43.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (1)
remark42/remark42 < 1.12.1
Published Oct 23, 2023
Tracked Since Feb 18, 2026