CVE-2026-120500

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 61/100
Published: 2026-11-02 Modified: 2026-11-02 First seen: 2026-11-02 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

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

Description

An Otter Wiki before 2.26.2 contains a stored cross-site scripting vulnerability in OtterwikiMdRenderer.block_code that allows attackers who can edit pages, including anonymous users under the default configuration, to inject arbitrary script. Attackers can place HTML inside a math fenced code block, which is rendered unescaped and executes for every viewer of the page.

Affected Software (2)

VendorProductVersion
redimp otterwiki 2.0.0 < 2.26.2
redimp otterwiki 2.0.0 < 2.26.2

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

5.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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

0.29%
Raw Score 0.002880
Percentile 21.6%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00288
2026-11-12
0.00288
2026-11-10
0.00288
2026-11-09
0.00288
2026-11-08
0.00288
2026-11-07
0.00288
2026-11-06
0.00288
2026-11-05
0.00288
2026-11-04
0.00288
2026-11-03
0.00288

Intelligence Sources

mitre ref →
nvd ref →