01 Record
CVE-2026-44977
countly-server: Stored XSS in feedback upload enables app-admin to compromise global admin session context
CriticalPUBLISHEDCNA: GitHub_M
CNA base score9.0 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
02 Description
countly-server: Stored XSS in feedback upload enables app-admin to compromise global admin session context
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.43% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 37.5% of scored records. A rank, not a probability.
- NVD base score
- 9.0 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-21.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-16 16:04Z12 DAYS AGO
- Last updated
- 2026-10-21 02:24Z8 DAYS AGO
- Reserved
- 2026-05-08
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.0)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
- Data version
- 5.2
- Document digest
- db6fbbe7f27e66cacfe1186a23b1d4002c9afb95d816eb5cf9314ae6e7837eb1
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/Countly/countly-server/security/advisories/GHSA-jqp4-p86c-phxc
- github.comhttps://github.com/Countly/countly-server/commit/ae899f37bc6d70c1b44859756ce80a204ae72631
- github.comhttps://github.com/Countly/countly-server/commit/fcb16c808c0fdb6dc99fe9c66de7fc560b3a9c41
- github.comhttps://github.com/Countly/countly-server/releases/tag/24.05.50
- github.comhttps://github.com/Countly/countly-server/releases/tag/25.03.44