LDAP filter injection vulnerability in Traffic Ops
Priority MEDIUM 50CWE-90Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
An unauthenticated Apache Traffic Control Traffic Ops user can send a request with a specially-crafted username to the POST /login endpoint of any API version to inject unsanitized content into the LDAP filter.
Why it matters now
EPSS 0.04761 91st percentileScored 2026-11-07
Fix Fixed Apache Traffic Control (Apache Software Foundation): 6.0.1github.com/apache/trafficcontrol (Go): 6.0.1, 5.1.4
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 |
|---|---|---|---|---|---|
| Apache | Apache Traffic Control | Traffic Ops to before 6.0.1 | 6.0.1 | Patch available | CNA |
| — | github.com/apache/trafficcontrol (Go) | 6.0.0 to before 6.0.1 | 6.0.1 | Patch available | GHSA-mg2c-rc36-p594 |
| — | github.com/apache/trafficcontrol (Go) | 5.1.0 to before 5.1.4 | 5.1.4 | Patch available | GHSA-mg2c-rc36-p594 |
- Apache Traffic Control VendorApache Affected Traffic Ops to before 6.0.1 Fixed in 6.0.1 Patch available CNA
- github.com/apache/trafficcontrol (Go) Vendor— Affected 6.0.0 to before 6.0.1 Fixed in 6.0.1 Patch available GHSA-mg2c-rc36-p594
- github.com/apache/trafficcontrol (Go) Vendor— Affected 5.1.0 to before 5.1.4 Fixed in 5.1.4 Patch available GHSA-mg2c-rc36-p594
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:traffic_control:*:*:*:*:*:*:*:* | 5.1.0 to before 5.1.4; 6.0.0 to before 6.0.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:5.1.4:rc0:*:*:*:*:*:* | 5.1.4 rc0 | Vulnerable | Apache |
| cpe:2.3:a:apache:traffic_control:6.0.1:rc0:*:*:*:*:*:* | 6.0.1 rc0 | Vulnerable | Apache |
- cpe:2.3:a:apache:traffic_control:*:*:*:*:*:*:*:* Versions 5.1.0 to before 5.1.4; 6.0.0 to before 6.0.1 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:5.1.4:rc0:*:*:*:*:*:* Versions 5.1.4 rc0 Vulnerable ·Apache
- cpe:2.3:a:apache:traffic_control:6.0.1:rc0:*:*:*:*:*:* Versions 6.0.1 rc0 Vulnerable ·Apache
Remediation
- Fix · CNA Apache Traffic Control (Apache Software Foundation) Fixed in 6.0.1
- Fix · GHSA-mg2c-rc36-p594 github.com/apache/trafficcontrol (Go) Fixed in 6.0.1 Advisory →
- Fix · GHSA-mg2c-rc36-p594 github.com/apache/trafficcontrol (Go) Fixed in 5.1.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-43350
- 2026-10-03 Alias added: GHSA-mg2c-rc36-p594
References
Advisory 5
- https://trafficcontrol.apache.org/security/
- [oss-security] 20211111 CVE-2021-43350: Apache Traffic Control: LDAP filter injection vulnerability in Traffic Ops
- [oss-security] 20211111 Re: CVE-2021-43350: Apache Traffic Control: LDAP filter injection vulnerability in Traffic Ops
- [oss-security] 20211116 Re: CVE-2021-43350: Apache Traffic Control: LDAP filter injection vulnerability in Traffic Ops
- https://nvd.nist.gov/vuln/detail/CVE-2021-43350
More Apache Traffic Control vulnerabilities
- TI-2024-30436 Apache Traffic Control: SQL Injection in Traffic Ops endpoint PUT deliveryservice_request_comments CVSS 3.1CRITICAL 9.9
- TI-2019-09251 Improper authentication in Apache Traffic Control CVSS 3.1CRITICAL 9.8
- TI-2025-38028 Apache Traffic Control: ReDoS issue in Traffic Router configuration CVSS 3.1HIGH 7.5
- TI-2017-05306 Uncontrolled resource consumption in Apache Traffic Control CVSS 3.0HIGH 7.5
- TI-2022-07358 Server-Side Request Forgery in Traffic Ops endpoint POST /user/login/oauth CVSS 3.1HIGH 7.5
- TI-2020-13271 Incorrect permission assignment in Apache Traffic Control CVSS 3.1MEDIUM 5.8
Sources
- CVE-2021-43350 · CVE Program
- CVE-2021-43350 · NVD
- FIRST EPSS
- GHSA-mg2c-rc36-p594 · GitHub Advisory Database · CC BY 4.0
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