CVE-2023-49785
CriticalExploitedNextChat has full-read SSRF and XSS vulnerability in /api/cors endpoint
Published Aug 5, 2024 · Updated Aug 12, 2026 · Also known as GHSA-qf3q-9f3h-cjp9
Key Facts
Patch immediately- CVE-2023-49785 is a critical-severity vulnerability (CVSS 9.3 v4) affecting NextChat.
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 6, 2024. No public exploit code is known.
- EPSS estimates a 83% probability of exploitation in the next 30 days.
- Fixed versions are available, including NextChat <=2.11.2, NextChat 2.11.2.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS (30-day exploit likelihood)
83%
Higher than 99.6% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
None known
Get the full CVE-2023-49785 brief as a PDF
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Description
NextChat, also known as ChatGPT-Next-Web, is a cross-platform chat user interface for use with ChatGPT. Versions 2.11.2 and prior are vulnerable to server-side request forgery and cross-site scripting. This vulnerability enables read access to internal HTTP endpoints but also write access using HTTP POST, PUT, and other methods. Attackers can also use this vulnerability to mask their source IP by forwarding malicious traffic intended for other Internet targets through these open proxies. As of time of publication, no patch is available, but other mitigation strategies are available. Users may avoid exposing the application to the public internet or, if exposing the application to the internet, ensure it is an isolated network with no access to any other internal resources.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Apr 6, 2024 | n/a | Not reported |
| CIRCL KEV | Apr 6, 2024 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| NextChatNextchat | See advisory | 2.11.2 |
Patched Releases
NextChat
<=2.11.2
Timeline
Added to Industry KEV feed
Apr 6, 2024
Added to CIRCL KEV
Apr 6, 2024
Publicly disclosed
Aug 5, 2024
Last updated
Aug 12, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CWE-918 Server-Side Request Forgery (SSRF)
References
- advisoryGHSA advisory
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49785.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2023-49785
- patchhttps://github.com/ChatGPTNextWeb/ChatGPT-Next-Web/pull/4285
- exploitVulnCheck exploitation report
FAQ
Common Questions.
NextChat, also known as ChatGPT-Next-Web, is a cross-platform chat user interface for use with ChatGPT.
Affected: NextChat. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 6, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including NextChat <=2.11.2, NextChat 2.11.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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