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CVE-2017-18635
An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web…
- 6.1MediumCVSS base score
- 4.8%Exploitation in 30 daysEPSS · top 8.0% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web page via the messages propagated to the status field, such as the VNC server name.
Timeline
ID reserved
By mitre
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 4.8% · top 8.0% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npm@novnc/novncGHSA-49rv-g7w5-m8xx (opens in a new tab)
References
10
- https://github.com/novnc/noVNC/issues/748 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/novnc/noVNC/releases/tag/v0.6.2 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.launchpad.net/horizon/+bug/1656435 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/novnc/noVNC/commit/6048299a138e078aed210f163111698c8c526a13#diff-286f7dc7b881e942e97cd50c10898f03L534 (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20191005 [SECURITY] [DLA 1946-1] novnc security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://www.shielder.it/blog/exploiting-an-old-novnc-xss-cve-2017-18635-in-openstack/ (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/ShielderSec/cve-2017-18635 (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2020:0754 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-4522-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [debian-lts-announce] 20211228 [SECURITY] [DLA 2854-1] novnc security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-0588 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-49rv-g7w5-m8xx (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-18635)Record last updated .