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  4. CVE 2026 108852 deep chat through 251 xss via markdown link
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Back to active CVEs
Low · CVSS 2.1CVE-2026-108852

Deep Chat through 2.5.1 XSS via Markdown Link Validation BypassCVE-2026-108852

Answer in brief

CVE-2026-108852 records a Low severity (CVSS 2.1) vulnerability in Deep Chat through 2.5.1 XSS via Markdown Link Validation Bypass. The current sources do not mark it as known exploited. The current feed maps OvidijusParsiunas/Deep Chat (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 11, 2026Updated Oct 11, 2026Source checked Oct 11, 2026First seen by HOL Oct 11, 2026Material review Oct 11, 2026
Upstream Advisory

Key facts

Risk
Low · CVSS 2.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 2.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps OvidijusParsiunas/Deep Chat (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
OvidijusParsiunas/Deep Chatgeneric>=1.4.7 <=2.5.1Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for OvidijusParsiunas/Deep Chat.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 11, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencehackmd.io
  • Source referencevulncheck.com
Upstream source description

Deep Chat through 2.5.1 contains a cross-site scripting vulnerability that allows attackers to inject javascript: links because RemarkableConfig.createNew disables Remarkable link validation. Attackers can place crafted Markdown links in AI responses, addMessage content, or loaded history to execute script in the embedding page when victims click them.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Neterbit NW-431F Embedded Web Server sms.json information disclosureSame generic ecosystem
  • FunnyWolf Viper config hard-coded credentialsSame generic ecosystem
  • zhayujie CowAgent Web Console web_channel.py denial of serviceSame generic ecosystem
  • zhayujie CowAgent Web Console upload read denial of serviceSame generic ecosystem
  • zhayujie CowAgent Media Download memory allocationSame generic ecosystem
  • erzhongxmu Jeewms Autocomplete Data JeecgFormDemoController.java getTreeData sql injectionSame generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 11, 2026
References
4 linked sources
Open source record