CVE-2026-43506
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial...
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
- Record
CVE-2026-43506- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-401
- Updated
- 2026-11-02
EUVDEUVD-2026-26659
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
- Record
EUVD-2026-26659- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-q553-9xvw-ww8h
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial...
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
- Record
GHSA-q553-9xvw-ww8h- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-401
- Updated
- 2026-11-02
NVD
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
- Record
CVE-2026-43506- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
OSVALPINE-CVE-2026-43506
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
- Record
ALPINE-CVE-2026-43506- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
OSVDEBIAN-CVE-2026-43506
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
- Record
DEBIAN-CVE-2026-43506- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-43506
An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.
- Record
UBUNTU-CVE-2026-43506- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
prosodyAlpine:v3.21 |
13.0.0 up to 0.12.6-r0 | 0.12.6-r0 |
prosodyAlpine:v3.22 |
13.0.0 up to 0.12.6-r0 | 0.12.6-r0 |
prosodyAlpine:v3.23 |
13.0.0 up to 13.0.5-r0 | 13.0.5-r0 |
prosodyAlpine:v3.24 |
13.0.0 up to 13.0.5-r0 | 13.0.5-r0 |
prosodyDebian:12 |
before 0.12.3-1+deb12u1, plus listed versions 0.12.3-1 |
0.12.3-1+deb12u1 |
prosodyDebian:13 |
before 13.0.1-1+deb131u, plus listed versions 13.0.1-1 |
13.0.1-1+deb131u |
prosodyDebian:14 |
before 13.0.5-1, plus listed versions 13.0.1-113.0.2-113.0.3-113.0.4-113.0.4-213.0.4-2~bpo13+113.0.5-1~bpo13+1 |
13.0.5-1 |
prosodyUbuntu:16.04:LTS |
All versions, plus listed versions 0.9.8-10.9.9-10.9.10-1 |
None known |
prosodyUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 0.9.12-20.10.0-10.10.0-1build10.10.0-1ubuntu0.1~esm1 |
None known |
prosodyUbuntu:20.04:LTS |
All versions, plus listed versions 0.11.2-10.11.3-10.11.4-1 |
None known |
Show 5 moreShow less
| Package | Affected | Fixed |
|---|---|---|
prosodyUbuntu:22.04:LTS |
All versions, plus listed versions 0.11.10-10.11.10-1build10.11.10-1build20.11.11-10.11.11-20.11.12-10.11.13-1 |
None known |
prosodyUbuntu:24.04:LTS |
All versions, plus listed versions 0.12.3-10.12.4-10.12.4-1build10.12.4-1build20.12.4-1build3 |
None known |
prosodyUbuntu:25.10 |
All versions, plus listed versions 0.12.5-1build113.0.1-1 |
None known |
prosodyUbuntu:26.10 |
All versions, plus listed versions 13.0.4-213.0.5-113.0.6-113.0.6-1build1 |
None known |
prosodyUbuntu:26.04:LTS |
All versions, plus listed versions 13.0.1-113.0.2-113.0.2-1build113.0.3-113.0.4-113.0.4-2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-43506 is a medium vulnerability (CVSS 5.3) in Prosody, published May 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. Fixed in prosody 0.12.6-r0.