CVE-2026-28683: Gokapi: Stored XSS in SVG Hotlinks
Vulnerability summary
CVE-2026-28683 is a high (CVSS 8.7) vulnerability in forceu gokapi. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.5% of scored vulnerabilities.
Not severe (CVSS 8.7, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 06-03-2026PublishedVulnerability first disclosed.
- 06-03-2026Last modifiedVulnerability information updated.
Description
Gokapi is a self-hosted file sharing server with automatic expiration and encryption support. Prior to version 2.2.3, if a malicious authenticated user uploads SVG and creates a hotlink for it, they can achieve stored XSS. This issue has been patched in version 2.2.3.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · GoEcosystem advisory · calculated8.7HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- NVDNIST8.7HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
EPSS trend
Probability
0.21%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
Decrease -0.04 pp
From 0.25% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, user interaction (CVSS vector). Other conditions: not stated in public data.
Forceu1 product
- gokapi< 2.2.3
Github.com/forceu1 product
- gokapi< 2.2.3 | All versions (No fix recorded)
2 vendors · 2 products
References
4 links- github.com/Forceu/Gokapi/security/advisories/GHSA-3c22-5j5m-4jq7X Refsource CONFIRMWEBAdvisoryVendor Advisory
- github.com/Forceu/GokapiPACKAGE