NaviServer 4.99.4 to 4.99.19 allows denial of service due to the nsd/driver.c…
Priority LOW 36CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
NaviServer 4.99.4 to 4.99.19 allows denial of service due to the nsd/driver.c ChunkedDecode function not properly validating the length of a chunk. A remote attacker can craft a chunked-transfer request that will result in a negative value being passed to memmove via the size parameter, causing the process to crash.
Why it matters now
EPSS 0.01435 73rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:naviserver_project:naviserver:*:*:*:*:*:*:*:* | 4.99.4 – 4.99.19 | Vulnerable | Naviserver Project |
- cpe:2.3:a:naviserver_project:naviserver:*:*:*:*:*:*:*:* Versions 4.99.4 – 4.99.19 Vulnerable ·Naviserver Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-13111
- 2026-10-03 Alias added: GHSA-v99v-qgch-h5q5
References
Sources
- CVE-2020-13111 · CVE Program
- CVE-2020-13111 · NVD
- FIRST EPSS
- GHSA-v99v-qgch-h5q5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences