CVE-2026-35055
Last modified
CVE-2026-35055 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. XenForo before 2.3.9 and before 2.2.18 is vulnerable to cross-site scripting (XSS) related to lightbox usage in posts. An attacker can inject malicious scripts that execute when users interact with post content displayed in the lightbox.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
XenForo before 2.3.9 and before 2.2.18 is vulnerable to cross-site scripting (XSS) related to lightbox usage in posts. An attacker can inject malicious scripts that execute when users interact with post content displayed in the lightbox.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xenforo | Xenforo | < 2.2.18 |
| Xenforo | Xenforo | >= 2.3.0, < 2.3.9 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-35055?
How severe is CVE-2026-35055?
How do I fix CVE-2026-35055?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-3505Allocation of resources without limits or throttling, Uncont…7.5
- CVE-2026-35050text-generation-webui is an open-source web interface for ru…8.8
- CVE-2026-35051Traefik is an HTTP reverse proxy and load balancer. Prior to…10
- CVE-2026-35052D-Tale is the combination of a Flask back-end and a React fr…9.8
- CVE-2026-35053OneUptime is an open-source monitoring and observability pla…9.8
- CVE-2026-35054XenForo before 2.3.9 is vulnerable to stored cross-site scri…5.4
- CVE-2026-35056XenForo before 2.3.9 and before 2.2.18 allows remote code ex…8.6
- CVE-2026-35057XenForo before 2.3.10 and before 2.2.19 is vulnerable to sto…5.4
- CVE-2026-35058Improper validation of packet length during tls-crypt-v2 key…6.5
- CVE-2026-3506The WP-Chatbot for Messenger plugin for WordPress is vulnera…5.3
- CVE-2026-35061Anviz CX7 Firmware is vulnerable to the most recently captur…5.3
- CVE-2026-35062An authenticated iControl SOAP user may be able to obtain in…7.1
Are you affected by CVE-2026-35055?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
