Dashboard / CVE-2026-121560

CVE-2026-121560

HIGH
MEDIUM Priority: 0.03 BB Relevance: 64/100
Published: 2026-11-03 Modified: 2026-11-11 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: None
VI: High
VA: Low

Description

LogChimp 0.9.0-alpha.1 before 0.9.3 contains an authorization bypass vulnerability that allows authenticated post authors to modify any other post by supplying mismatched postId and id body parameters. Attackers can set postId to their own post and id to an enumerated victim post UUID to overwrite its title, slug, content, boardId and roadmap_id.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
logchimp logchimp 0.9.0-alpha.1 < 0.9.3
logchimp logchimp 0.9.0-alpha.1 < 0.9.3

References & Advisories (6)

https://github.com/logchimp/logchimp/releases/tag/v0.9.3
technical-description release-notes

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.45%
Raw Score 0.004500
Percentile 39.7%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00450
2026-11-13
0.00450
2026-11-12
0.00450
2026-11-10
0.00450
2026-11-09
0.00450
2026-11-08
0.00450
2026-11-07
0.00450
2026-11-06
0.00450
2026-11-05
0.00450
2026-11-04
0.00450

Intelligence Sources

mitre ref →
nvd ref →

External Links