CVE-2021-35236 json
Missing Secure Flag From SSL Cookie
published 2021-10-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21879
- cvss
- 3.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
The Secure flag is not set in the SSL Cookie of Kiwi Syslog Server 9.7.2 and previous versions. The Secure attribute tells the browser to only send the cookie if the request is being sent over a secure channel such as HTTPS. This will help protect the cookie from being passed over unencrypted requests. If the application can be accessed over both HTTP, there is a potential for the cookie can be sent in clear text.
Patch / fix
- SolarWinds Kiwi Syslog Server 9.8
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- SolarWinds Kiwi Syslog Server
Classification
References
-
documentation.solarwinds.com
/en/success_center/kss/content/release_notes/kss_9-8_release_notes.htm
release-notes, vendor-advisory
-
solarwinds.com
/trust-center/security-advisories/cve-2021-35236
vendor-advisory
Sources
- CVE List CVE-2021-35236
- NVD CVE-2021-35236
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