CVE-2018-18670 json
GNUBOARD5 5.3.1.9 has XSS that allows remote attackers to inject arbitrary web script or HTML via the "Extra Contents" parameter, aka the a…
published 7y ago modified 4mo ago also EUVD-2018-10386
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
GNUBOARD5 5.3.1.9 has XSS that allows remote attackers to inject arbitrary web script or HTML via the "Extra Contents" parameter, aka the adm/config_form_update.php cf_1~10 parameter.
Patch / fix
Is CVE-2018-18670 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
1.51% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).
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 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/gnuboard/gnuboard5/commit/a45241f4bc46aee1ab2cc0749f6444b043681edf#diff-d1ecbee80f57fde59063c4fafcef1bce
patch, third-party-advisory
-
github.com
/gnuboard/gnuboard5/compare/15b2e73...2549172
patch, third-party-advisory
-
github.com
/gnuboard/gnuboard5/releases/tag/5.3.2.0
release-notes, third-party-advisory
Sources
- CVE List CVE-2018-18670
- NVD CVE-2018-18670
Fencer Intel 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.