GHSA-4C8J-MGM4-QQVP Remark42: Cross-Site Scripting (XSS) on /api/v1/img via content-type spoofing

Summary The remark42 image proxy fetches an arbitrary remote URL and re-serves the response from remark42's own origin. The download path decides whether the fetched resource is an image by looking only at the Content-Type header the remote server claims — it never inspects the actual bytes. The...

EUVD-2026-37511

Remark42: Cross-Site Scripting XSS on /api/v1/img via content-type spoofing...

CVE-2026-48788

Remark42 is a self-hosted comment engine for blogs, articles, or any other place where readers can add comments. Versions 1.6.0 through 1.15.0 contain a Cross-Site Scripting XSS vulnerability exploitable through content-type spoofing. The Remark42 image proxy fetches an arbitrary remote URL and...

CVE-2026-48788

CVE-2026-48788 affects Remark42 (versions 1.6.0–1.15.0). The known issue is a content-type spoofing-based XSS in the image proxy: during download the proxy checks Content-Type headers to decide if a resource is an image, but the serving phase sniffing can differ, leading to a mismatch that lets H...

CVE-2026-48788 Remark42: Cross-Site Scripting (XSS) on /api/v1/img via content-type spoofing

Remark42 is a self-hosted comment engine for blogs, articles, or any other place where readers can add comments. Versions 1.6.0 through 1.15.0 contain a Cross-Site Scripting XSS vulnerability exploitable through content-type spoofing. The Remark42 image proxy fetches an arbitrary remote URL and...

PT-2026-50130

Name of the Vulnerable Software and Affected Versions Remark42 versions 1.6.0 through 1.15.0 Description Remark42 contains a Cross-Site Scripting XSS issue exploitable through content-type spoofing via the image proxy. The proxy fetches a remote URL and re-serves the response from its own origin....

CVE-2023-45966

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery SSRF vulnerability...

EUVD-2021-15909

Malware in sbrugna...

EUVD-2023-50228

Malicious code in bioql PyPI...

CVE-2021-29271

remark42 before 1.6.1 allows XSS, as demonstrated by "Locator: LocatorURL:" followed by an XSS payload. This is related to backend/app/store/comment.go and backend/app/store/service/service.go...

CVE-2023-45966

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery SSRF vulnerability...

CVE-2023-45966

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery SSRF vulnerability...

Server side request forgery (ssrf)

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery SSRF vulnerability...

CVE-2023-45966

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery SSRF vulnerability...

CVE-2023-45966

The CVE-2023-45966 entry concerns umputun remark42 (versions 1.12.1 and earlier) with a Blind Server-Side Request Forgery (SSRF) vulnerability. Affected component: remark42; root cause is SSRF that is not fully exposed in the provided details. Impact per CVSS indicates high confidentiality impact...

PT-2023-29777 · Umputun · Remark42

Name of the Vulnerable Software and Affected Versions: umputun remark42 versions 1.12.1 and before Description: The issue is related to a Blind Server-Side Request Forgery SSRF vulnerability. No information is provided about the estimated number of potentially affected devices worldwide or...

CVE-2023-45966

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery SSRF vulnerability...

CVE-2023-45966

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery SSRF vulnerability...

CVE-2021-29271

remark42 before 1.6.1 allows XSS, as demonstrated by "Locator: LocatorURL:" followed by an XSS payload. This is related to backend/app/store/comment.go and backend/app/store/service/service.go...

CVE-2021-29271

remark42 before 1.6.1 allows XSS, as demonstrated by "Locator: LocatorURL:" followed by an XSS payload. This is related to backend/app/store/comment.go and backend/app/store/service/service.go...