CVE-2021-45915 json
In LuxSoft LuxCal Web Calendar before 5.2.0, an unauthenticated attacker can manipulate a cookie value.
published 2022-05-24 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32630
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
In LuxSoft LuxCal Web Calendar before 5.2.0, an unauthenticated attacker can manipulate a cookie value. This allows the attacker's session to be authenticated as any registered LuxCal user, including the site administrator.
Patch / fix
- luxsoft luxcal 5.2.0
Exploit prediction
1.62% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
luxsoft.eu
/index.php?pge=dload
product, release-notes, vendor-advisory
-
github.com
/h1pmnh
not-applicable
-
twitter.com
/h1pmnh
third-party-advisory
-
h1pmnh.github.io
/post/cve-luxcal-2021/
third-party-advisory
Sources
- CVE List CVE-2021-45915
- NVD CVE-2021-45915
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.