Open redirect in Apache HTTP Server
Priority HIGH 66CWE-601Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 16 fixed, 4 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-601.
Summary
In Apache HTTP server 2.4.0 to 2.4.39, Redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an unexpected URL within the request URL.
Why it matters now
EPSS 0.73981 99th percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 16 fixed, 4 without a fix
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 HTTP Server | 2.4.0 to 2.4.39 | — | No fix listed | CNA |
- Apache HTTP Server Vendor— Affected 2.4.0 to 2.4.39 Fixed in — No fix listed CNA
Remediation
Red Hat 5 advisories
- RHSA-2020:4751 Released 2020-11-04 · Red Hat rating Moderatehttpd:2.4 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) httpd-2.4.37-30.module+el8.3.0+7001+0766b9e7.aarch64::httpd:2.4, httpd-2.4.37-30.module+el8.3.0+7001+0766b9e7.ppc64le::httpd:2.4, httpd-2.4.37-30.module+el8.3.0+7001+0766b9e7.s390x::httpd:2.4 +38
- RHSA-2020:3958 Released 2020-09-29 · Red Hat rating Moderatehttpd security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client Optional (v. 7) httpd-2.4.6-95.el7, httpd-devel-2.4.6-95.el7, httpd-manual-2.4.6-95.el7 +5
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) httpd-2.4.6-95.el7, httpd-devel-2.4.6-95.el7, httpd-manual-2.4.6-95.el7 +5
- Red Hat Enterprise Linux Server (v. 7) httpd-2.4.6-95.el7, httpd-devel-2.4.6-95.el7, httpd-manual-2.4.6-95.el7 +3
- Red Hat Enterprise Linux Server Optional (v. 7) mod_ldap-2.4.6-95.el7, mod_proxy_html-1:2.4.6-95.el7
- Red Hat Enterprise Linux Workstation (v. 7) httpd-2.4.6-95.el7, httpd-devel-2.4.6-95.el7, httpd-manual-2.4.6-95.el7 +3
- Red Hat Enterprise Linux Workstation Optional (v. 7) mod_ldap-2.4.6-95.el7, mod_proxy_html-1:2.4.6-95.el7
- RHSA-2020:2263 Released 2020-05-26 · Red Hat rating Moderatehttpd24-httpd and httpd24-mod_md security and enhancement update
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) httpd24-httpd-2.4.34-18.el6, httpd24-httpd-devel-2.4.34-18.el6, httpd24-httpd-manual-2.4.34-18.el6 +5
- Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) httpd24-httpd-2.4.34-18.el7, httpd24-httpd-devel-2.4.34-18.el7, httpd24-httpd-manual-2.4.34-18.el7 +6
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) httpd24-httpd-2.4.34-18.el7, httpd24-httpd-devel-2.4.34-18.el7, httpd24-httpd-manual-2.4.34-18.el7 +6
- Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) httpd24-httpd-2.4.34-18.el7, httpd24-httpd-devel-2.4.34-18.el7, httpd24-httpd-manual-2.4.34-18.el7 +6
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) httpd24-httpd-2.4.34-18.el6, httpd24-httpd-devel-2.4.34-18.el6, httpd24-httpd-manual-2.4.34-18.el6 +5
- Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) httpd24-httpd-2.4.34-18.el7, httpd24-httpd-devel-2.4.34-18.el7, httpd24-httpd-manual-2.4.34-18.el7 +6
Show 2 more Red Hat advisories
- RHSA-2020:1337 Released 2020-04-06 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.37 SP2 security update
- Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-apr-1.6.3-86.jbcs.el6, jbcs-httpd24-apr-devel-1.6.3-86.jbcs.el6, jbcs-httpd24-brotli-1.0.6-21.jbcs.el6 +17
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr-1.6.3-86.jbcs.el7, jbcs-httpd24-apr-devel-1.6.3-86.jbcs.el7, jbcs-httpd24-brotli-1.0.6-21.jbcs.el7 +17
- RHSA-2020:1336 Released 2020-04-06 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.37 SP2 security update
- JBoss Core Services Apache HTTP Server 2.4.37 SP2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Enterprise Web Server 2 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Web Server 3 | Affected | No fix planned: Out of support scope |
| JBoss Core Services Apache HTTP Server 2.4.37 SP2 | Fixed | RHSA-2020:1336 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:4751 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:3958 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:3958 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:3958 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:3958 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:3958 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:3958 |
| Red Hat JBoss Core Services on RHEL 6 Server | Fixed | RHSA-2020:1337 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2020:1337 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2020:2263 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:2263 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) | Fixed | RHSA-2020:2263 |
| Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) | Fixed | RHSA-2020:2263 |
| Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2020:2263 |
| Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:2263 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-10098
- 2026-10-03 Alias added: GHSA-hm8m-x559-v4fw
References
Other 16
- [oss-security] 20200401 CVE-2020-1927: mod_rewrite configurations vulnerable to open redirect
- [httpd-cvs] 20200401 svn commit: r1058586 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20200401 svn commit: r1058587 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20200420 svn commit: r1876764 - /httpd/httpd/branches/2.4.x/CHANGES
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://www.oracle.com/security-alerts/cpujan2020.html
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/
- [httpd-cvs] 20210330 svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210330 svn commit: r1073139 [12/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1888194 [12/13] - /httpd/site/trunk/content/security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
More Apache Http Server vulnerabilities
- TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
- TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
- TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
- TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2019-10098 · CVE Program
- CVE-2019-10098 · NVD
- FIRST EPSS
- GHSA-hm8m-x559-v4fw · GitHub Advisory Database · CC BY 4.0
- CVE-2019-10098 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences