CVE-2026-1820
Last modified
CVE-2026-1820 is a medium-severity vulnerability rated 6.4/10 on the CVSS scale. The Media Library Alt Text Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'bvmalt_sc_div_update_alt_text' shortcode in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
The Media Library Alt Text Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'bvmalt_sc_div_update_alt_text' shortcode in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-1820?
How severe is CVE-2026-1820?
How do I fix CVE-2026-1820?
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-2026-18187A format string vulnerability was found in the Internal Back…8.1
- CVE-2026-18188A format string vulnerability was found in the Rsync Backup …8.1
- CVE-2026-1819Improper Neutralization of Input During Web Page Generation …8.8
- CVE-2026-18191VIN-DS783E-E6 developed by Vacron has a Hidden Functionality…9.8
- CVE-2026-18192VIN-DS783E-E6 developed by Vacron has an Arbitrary File Read…7.1
- CVE-2026-18197Improper neutralization of input during web page generation …6.4
- CVE-2026-18200The FoodBoxBooker WordPress plugin before 1.0.8 does not ver…4.3
- CVE-2026-18201Keycloak provides a way to manage identity providers and org…5.5
- CVE-2026-18203A flaw was found in the group policy evaluation logic of Key…6.5
- CVE-2026-18206A flaw was found in the keycloak-services component of Keycl…3.7
- CVE-2026-18207A flaw was found in the client policy enforcement mechanism …6.5
- CVE-2026-18208A flaw was found in the OIDC token introspection endpoint of…6.5
Are you affected by CVE-2026-1820?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST