Wallos 4.4.0 before 5.10.3 contains a stored cross-site scripting vulnerability in
Source GCVE Database
Not known to be exploited · CVSS 5.1 Medium : upgrade to 5.10.3 when convenient.
Data as of 11 Nov 2026, 22:33 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 5.1 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 5.4 |
- Patch
- Available – fixed in 5.10.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Upgrade Wallos to 5.10.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| elliteWallos | Affected
| Fixed in
|
GitHubWallospkg:github/WallosOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in Wallos version 5.10.3 and later. Users should upgrade to version 5.10.3 or newer to remediate this vulnerability. No vendor advisory or patch links were provided, so verify with the vendor for official patch availability and deployment instructions. Until patched, restrict access to the sendnotifications.php endpoint to trusted users only and monitor for suspicious activity related to notification services.
Description
Wallos versions from 4.4.0 up to but not including 5.10.3 contain a stored cross-site scripting (XSS) vulnerability in the sendnotifications.php endpoint. This flaw allows registered users to inject malicious scripts through unescaped notification service responses. An attacker can exploit this by directing Mattermost webhook URLs or Web Push endpoints to a server under their control that returns JavaScript. When an administrator opens sendnotifications.php, the injected script executes in their session, potentially compromising confidentiality and integrity.
References
- nvd.nist.gov/vuln/detail/CVE-2026-126778 (opens in a new tab)
- github.com/ellite/Wallos/commit/693d8676f3e5b0c85e120fc5958ccb82f37ee89c (opens in a new tab)
- github.com/ellite/Wallos/blob/v4.4.0/endpoints/cronjobs/sendnotifications.php (opens in a new tab)
- github.com/ellite/Wallos/blob/v5.10.2/endpoints/cronjobs/sendnotifications.php (opens in a new tab)
- github.com/ellite/Wallos/releases/tag/v5.10.3 (opens in a new tab)
- vulncheck.com/advisories/wallos-4.4.0-before-5.10.3-stored-xss-via-sendnotifications-php (opens in a new tab)