CVE-2018-1000550
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal...
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal vulnerability in wwsympa.fcgi template editing function that can result in Possibility to create or modify files on the server filesystem. This attack appear to be exploitable via HTTP GET/POST request. This vulnerability appears to have been fixed in 6.2.32.
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
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal vulnerability in wwsympa.fcgi template editing function that can result in Possibility to create or modify files on the server filesystem. This attack appear to be exploitable via HTTP GET/POST request. This vulnerability appears to have been fixed in 6.2.32.
- Record
CVE-2018-1000550- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-22
- Updated
- 2026-11-02
CVE List No score
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal vulnerability in wwsympa.fcgi template editing function that can result in Possibility to create or modify files on the server filesystem. This attack appear to be exploitable via HTTP GET/POST request. This vulnerability appears to have been fixed in 6.2.32.
- Record
CVE-2018-1000550- Updated
- 2026-11-02
EUVDEUVD-2018-1939 No score
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal vulnerability in wwsympa.fcgi template editing function that can result in Possibility to create or modify files on the server filesystem. This attack appear to be exploitable via HTTP GET/POST request. This vulnerability appears to have been fixed in 6.2.32.
- Record
EUVD-2018-1939- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4fwc-r99f-85f4
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal...
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal vulnerability in wwsympa.fcgi template editing function that can result in Possibility to create or modify files on the server filesystem. This attack appear to be exploitable via HTTP GET/POST request. This vulnerability appears to have been fixed in 6.2.32.
- Record
GHSA-4fwc-r99f-85f4- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal vulnerability in wwsympa.fcgi template editing function that can result in Possibility to create or modify files on the server filesystem. This attack appear to be exploitable via HTTP GET/POST request. This vulnerability appears to have been fixed in 6.2.32.
- Record
CVE-2018-1000550- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-1000550
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal vulnerability in wwsympa.fcgi template editing function that can result in Possibility to create or modify files on the server filesystem. This attack appear to be exploitable via HTTP GET/POST request. This vulnerability appears to have been fixed in 6.2.32.
- Record
DEBIAN-CVE-2018-1000550- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2018-1000550
The Sympa Community Sympa version prior to version 6.2.32 contains a Directory Traversal vulnerability in wwsympa.fcgi template editing function that can result in Possibility to create or modify files on the server filesystem. This attack appear to be exploitable via HTTP GET/POST request. This vulnerability appears to have been fixed in 6.2.32.
- Record
UBUNTU-CVE-2018-1000550- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVMGASA-2019-0263 No score
Updated sympa packages fix security vulnerability
Updated sympa packages fix security vulnerability:
Michael Kaczmarczik discovered a vulnerability in the web interface template editing function of Sympa, a mailing list manager. Owner and listmasters could use this flaw to create or modify arbitrary files in the server with privileges of sympa user or owner view list config files even if edit_list.conf prohibits it (CVE-2018-1000550).
- Record
MGASA-2019-0263- Updated
- 2026-11-02
OSVUSN-4442-1 No score
sympa vulnerabilities
Michael Kaczmarczik discovered that Sympa incorrectly handled HTTP GET/POST requests. An attacker could possibly use this issue to insert, edit or obtain sensitive information. (CVE-2018-1000550)
It was discovered that Sympa incorrectly handled URL parameters. An attacker could possibly use this issue to perform XSS attacks. (CVE-2018-1000671)
Nicolas Chatelain discovered that Sympa incorrectly handled environment variables. An attacker could possibly use this issue with a setuid binary and gain root privileges. (CVE-2020-10936)
- Record
USN-4442-1- Updated
- 2026-11-02
OSVUSN-4442-2 No score
sympa vulnerabilities
USN-4442-1 fixed vulnerabilities in Sympa. This update provides the corresponding updates for Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. Original advisory details:
Nicolas Chatelain discovered that Sympa incorrectly handled environment variables. An attacker could possibly use this issue with a setuid binary and gain root privileges. (CVE-2020-10936)
Michael Kaczmarczik discovered that Sympa incorrectly handled HTTP GET/POST requests. An attacker could possibly use this issue to insert, edit or obtain sensitive information. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-1000550)
It was discovered that Sympa incorrectly handled URL parameters. An attacker could possibly use this issue to perform XSS attacks. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2018-1000671)
- Record
USN-4442-2- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
sympaDebian:12 |
before 6.2.32~dfsg-1 | 6.2.32~dfsg-1 |
sympaDebian:13 |
before 6.2.32~dfsg-1 | 6.2.32~dfsg-1 |
sympaDebian:14 |
before 6.2.32~dfsg-1 | 6.2.32~dfsg-1 |
sympaDebian:8 |
before 6.1.23~dfsg-2+deb8u2, plus listed versions 6.1.23~dfsg-26.1.23~dfsg-2+deb8u1 |
6.1.23~dfsg-2+deb8u2 |
sympaDebian:9 |
before 6.2.16~dfsg-3+deb9u1, plus listed versions 6.2.16~dfsg-3 |
6.2.16~dfsg-3+deb9u1 |
sympaMageia:6 |
before 6.2.16-1.1.mga6 | 6.2.16-1.1.mga6 |
sympaUbuntu:Pro:14.04:LTS |
before 6.1.17~dfsg-1ubuntu0.1~esm1, plus listed versions 6.1.11~dfsg-56.1.17~dfsg-1 |
6.1.17~dfsg-1ubuntu0.1~esm1 |
sympaUbuntu:Pro:16.04:LTS |
before 6.1.24~dfsg-1ubuntu0.1~esm1, plus listed versions 6.1.24~dfsg-1 |
6.1.24~dfsg-1ubuntu0.1~esm1 |
sympaUbuntu:Pro:18.04:LTS |
before 6.2.24~dfsg-1ubuntu0.1~esm1, plus listed versions 6.2.18~dfsg-16.2.22~dfsg-16.2.24~dfsg-1 |
6.2.24~dfsg-1ubuntu0.1~esm1 |
sympaUbuntu:Pro:14.04:LTS From an advisory covering 3 CVEs |
before 6.1.17~dfsg-1ubuntu0.1~esm1, plus listed versions 6.1.11~dfsg-56.1.17~dfsg-1 |
6.1.17~dfsg-1ubuntu0.1~esm1 |
sympaUbuntu:Pro:16.04:LTS From an advisory covering 3 CVEs |
before 6.1.24~dfsg-1ubuntu0.1~esm1, plus listed versions 6.1.24~dfsg-1 |
6.1.24~dfsg-1ubuntu0.1~esm1 |
sympaUbuntu:Pro:18.04:LTS From an advisory covering 3 CVEs |
before 6.2.24~dfsg-1ubuntu0.1~esm1, plus listed versions 6.2.18~dfsg-16.2.22~dfsg-16.2.24~dfsg-1 |
6.2.24~dfsg-1ubuntu0.1~esm1 |
sympaUbuntu:Pro:20.04:LTS From an advisory covering 3 CVEs |
before 6.2.40~dfsg-4ubuntu0.20.04.1~esm1, plus listed versions 6.2.40~dfsg-16.2.40~dfsg-36.2.40~dfsg-4 |
6.2.40~dfsg-4ubuntu0.20.04.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-1000550 is a critical vulnerability (CVSS 9.8) in Sympa, published June 26, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.54%, the 85th percentile. Fixed in sympa 6.2.32~dfsg-1.
References
sympa-community.github.io/security/2018-001.html
debian.org/security/2018/dsa-4285
lists.debian.org/debian-lts-announce/2018/07/msg00033.html
usn.ubuntu.com/4442-1
nvd.nist.gov/vuln/detail/CVE-2018-1000550
github.com/advisories/GHSA-4fwc-r99f-85f4
Show 9 moreShow less
security-tracker.debian.org/tracker/CVE-2018-1000550
advisories.mageia.org/MGASA-2019-0263.html
bugs.mageia.org/show_bug.cgi?id=23536
ubuntu.com/security/CVE-2018-1000550
cve.org/CVERecord?id=CVE-2018-1000550