CVE-2018-17031 json
Gogs XSS Vulnerability
published 2018-09-14 8 y ago modified 2026-06-17 4 mo ago also GHSA-px5r-fqj6-r2f8 , GO-2023-1972 , EUVD-2022-4849
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
In Gogs 0.11.53, an attacker can use a crafted .eml file to trigger MIME type sniffing, which leads to XSS, as demonstrated by Internet Explorer, because an "X-Content-Type-Options: nosniff" header is not sent.
Patch / fix
Exploit prediction
0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/gogs/gogs/issues/5397 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | gogs.io/gogs | <0.12.0 |
0.12.0 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/gogs/gogs/pull/6008
web
-
github.com
/gogs/gogs/commit/e14b6abf9dae13bc087c9d9db8fe7c7a5125c792
web
-
github.com
/gogs/gogs/issues/5397
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-17031
advisory
-
github.com
/gogs/gogs
package
-
github.com
/advisories/GHSA-px5r-fqj6-r2f8
advisory
Sources
- CVE List CVE-2018-17031
- GitHub Advisory GHSA-px5r-fqj6-r2f8
- NVD CVE-2018-17031
- OSV GO-2023-1972
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.