How severe is CVE-2026-29933?

CVE-2026-29933 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-29933 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29933?

CVE-2026-29933 affects Yzmcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29933?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-29933 have an EU (EUVD) identifier?

Yes. CVE-2026-29933 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16209.

When was CVE-2026-29933 published?

CVE-2026-29933 was published on 2026-03-26 and last updated on 2026-06-17.

CVE-2026-29933

CVE-2026-29933 is a medium-severity vulnerability in Yzmcms with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16209
Weakness: CWE-79
Affected product: Yzmcms
Published: 2026-03-26
Last modified: 2026-06-17

Description

A reflected cross-site scripting (XSS) vulnerability in the /index/login.html component of YZMCMS v7.4 allows attackers to execute arbitrary Javascript in the context of the user's browser via modifying the referrer value in the request header.

Frequently asked questions

What is CVE-2026-29933?: A reflected cross-site scripting (XSS) vulnerability in the /index/login.html component of YZMCMS v7.4 allows attackers to execute arbitrary Javascript in the context of the user's browser via modifying the referrer value in the request header.
How severe is CVE-2026-29933?: CVE-2026-29933 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-29933 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29933?: CVE-2026-29933 affects Yzmcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29933?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-29933 have an EU (EUVD) identifier?: Yes. CVE-2026-29933 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16209.
When was CVE-2026-29933 published?: CVE-2026-29933 was published on 2026-03-26 and last updated on 2026-06-17.

References

https://github.com/yzmcms/yzmcms/issues/69

Affected products (1)

cpe:2.3:a:yzmcms:yzmcms:7.4:*:*:*:*:*:*:*

More vulnerabilities in Yzmcms

CVE-2018-11554 — Critical (CVSS 9.8): The forgotten-password feature in index.php/member/reset/reset_email.html in YzmCMS v3.2 through v3.7 has a Response…
CVE-2022-23383 — Critical (CVSS 9.1): YzmCMS v6.3 is affected by broken access control. Without login, unauthorized access to the user's personal home page…
CVE-2020-23595 — High (CVSS 8.8): Cross Site Request Forgery (CSRF) vulnerability in yzmcms version 5.6, allows remote attackers to escalate privileges…
CVE-2022-23384 — High (CVSS 8.8): YzmCMS v6.3 is affected by Cross Site Request Forgery (CSRF) in /admin.add
CVE-2022-23888 — High (CVSS 8.8): YzmCMS v6.3 was discovered to contain a Cross-Site Request Forgey (CSRF) via the component…
CVE-2020-19951 — High (CVSS 8.8): A cross-site request forgery (CSRF) in /controller/pay.class.php of YzmCMS v5.5 allows attackers to access sensitive…

All CVEs affecting Yzmcms →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →