HOMEVULNERABILITIESCVE-2020-1927
MEDIUM

CVE-2020-1927

CWE-601Published: April 2, 2020· Updated: Jun 17, 2026

6.1
CVSS v3.1

Official Description

In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL.

NVD Source

Technical Analysis

CVE-2020-1927 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Vendors & Products

Apache1 product(s)
http server
broadcom1 product(s)
brocade fabric operating system
Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
netapp1 product(s)
oncommand unified manager core package
openSUSE1 product(s)
leap
Oracle7 product(s)
communications element managercommunications session report managercommunications session route managerenterprise manager ops centerinstantis enterprisetracksd-wan awarezfs storage appliance kit
Source: NVD CPE · 24 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://www.oracle.com/security-alerts/cpuApr2021.html
PATCHhttps://www.oracle.com/security-alerts/cpujul2020.html
PATCHhttps://www.oracle.com/security-alerts/cpuApr2021.html
PATCHhttps://www.oracle.com/security-alerts/cpujul2020.html
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.html
ADVISORYhttp://www.openwall.com/lists/oss-security/2020/04/03/1
ADVISORYhttp://www.openwall.com/lists/oss-security/2020/04/04/1
ADVISORYhttps://httpd.apache.org/security/vulnerabilities_24.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/07/msg00006.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200413-0002/
ADVISORYhttps://usn.ubuntu.com/4458-1/
ADVISORYhttps://www.debian.org/security/2020/dsa-4757
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.html
ADVISORYhttp://www.openwall.com/lists/oss-security/2020/04/03/1
ADVISORYhttp://www.openwall.com/lists/oss-security/2020/04/04/1
ADVISORYhttps://httpd.apache.org/security/vulnerabilities_24.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/07/msg00006.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200413-0002/
ADVISORYhttps://usn.ubuntu.com/4458-1/
ADVISORYhttps://www.debian.org/security/2020/dsa-4757

All References (54)

→
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.htmlMailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/04/03/1Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/04/04/1Mailing List · Third Party Advisory
→
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
→
https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r10b853ea87dd150b0e76fda3f8254dfdb23dd05fa55596405b58478e%40%3Ccvs.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r1719675306dfbeaceff3dc63ccad3de2d5615919ca3c13276948b9ac%40%3Cdev.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r52a52fd60a258f5999a8fa5424b30d9fd795885f9ff4828d889cd201%40%3Cdev.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r6a4146bf3d1645af2880f8b7a4fd8afd696d5fd4a3ae272f49f5dc84%40%3Ccvs.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r70ba652b79ba224b2cbc0a183078b3a49df783b419903e3dcf4d78c7%40%3Ccvs.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r731d43caece41d78d8c6304641a02a369fd78300e7ffaf566b06bc59%40%3Ccvs.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E
→
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E

Quick Facts

CVE IDCVE-2020-1927
CVSS Score6.1 / 10
SeverityMEDIUM
WeaknessCWE-601
CISA KEVNo
Affected8 vendor(s)
PublishedApr 2, 2020

Related CVEs (CWE-601)

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CVE-2020-36912
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CVE-2025-43526
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CVE-2019-25282
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CVE-2025-55031
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CVE-2022-31657
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-1927 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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