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CVE-2020-28502

Arbitrary Code Injection

8.1 HighPublic exploitFix available

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

4.63%Up 3.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 8.1

Arbitrary Code Injection

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Record
CVE-2020-28502
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Updated
2026-11-02
EUVDEUVD-2021-1094 8.1

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Record
EUVD-2021-1094
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Updated
2026-11-03
GitHub AdvisoriesGHSA-h4j5-c7cj-74xg 9.8

xmlhttprequest and xmlhttprequest-ssl vulnerable to Arbitrary Code Injection

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Record
GHSA-h4j5-c7cj-74xg
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
NVD 8.1

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Record
CVE-2020-28502
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-94
Updated
2026-11-02
OSV 8.1

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Record
CVE-2020-28502
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2020-28502 8.1

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Record
DEBIAN-CVE-2020-28502
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 6 moreShow less
OSVGHSA-h4j5-c7cj-74xg 9.8

xmlhttprequest and xmlhttprequest-ssl vulnerable to Arbitrary Code Injection

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Record
GHSA-h4j5-c7cj-74xg
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
OSVROOT-APP-NPM-CVE-2020-28502 8.1

CVE-2020-28502 in xmlhttprequest-ssl - Patched by Root

Root has patched CVE-2020-28502 in the xmlhttprequest-ssl package for Root:npm. Multiple fixed versions available.

Record
ROOT-APP-NPM-CVE-2020-28502
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-06
OSVUBUNTU-CVE-2020-28502 8.1

This affects the package xmlhttprequest before 1.7.0; all versions of package xmlhttprequest-ssl. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

Record
UBUNTU-CVE-2020-28502
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVCLSA-2026-1772064638 No score

TuxCare security update for xmlhttprequest-ssl (2 CVEs)

TuxCare rebuilt xmlhttprequest-ssl to address 2 CVEs. Fixed in 1.5.5-tuxcare.1.

Record
CLSA-2026-1772064638
Updated
2026-11-02
OSVCLSA-2026-1773188115 No score

TuxCare security update for xmlhttprequest-ssl (2 CVEs)

TuxCare rebuilt xmlhttprequest-ssl to address 2 CVEs. Fixed in 1.5.3-tuxcare.1.

Record
CLSA-2026-1773188115
Updated
2026-11-02
OSVCLSA-2026-1777336760 No score

TuxCare security update for xmlhttprequest (1 CVE)

TuxCare rebuilt xmlhttprequest to address 1 CVE. Fixed in 1.4.2-tuxcare.1.

Record
CLSA-2026-1777336760
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
xmlhttprequest
npm
 before 1.7.0
1.7.0
xmlhttprequest-ssl
npm
 before 1.6.2
1.6.2
xmlhttprequest-ssl
TuxCare:npm
From an advisory covering 2 CVEs
 1.5.5-tuxcare.0 up to 1.5.5-tuxcare.1, plus listed versions
1.5.5
1.5.5-tuxcare.1
xmlhttprequest-ssl
TuxCare:npm
From an advisory covering 2 CVEs
 1.5.3-tuxcare.0 up to 1.5.3-tuxcare.1, plus listed versions
1.5.3
1.5.3-tuxcare.1
xmlhttprequest
TuxCare:npm
 1.4.2-tuxcare.0 up to 1.4.2-tuxcare.1, plus listed versions
1.4.2
1.4.2-tuxcare.1
node-xmlhttprequest
Debian:12
 before 1.8.0-1
1.8.0-1
node-xmlhttprequest
Debian:13
 before 1.8.0-1
1.8.0-1
node-xmlhttprequest
Debian:14
 before 1.8.0-1
1.8.0-1
xmlhttprequest-ssl
Root:npm
 before 1.5.5-aikido.1
1.5.5-aikido.1
@rootio/xmlhttprequest-ssl
Root:npm
 before 1.5.5-root.io.1
1.5.5-root.io.1
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Affected packages
PackageAffectedFixed
node-xmlhttprequest
Ubuntu:16.04:LTS
 All versions, plus listed versions
1.6.0-1
 None known
node-xmlhttprequest
Ubuntu:18.04:LTS
 All versions, plus listed versions
1.6.0-1
 None known
node-xmlhttprequest-ssl
Ubuntu:18.04:LTS
 All versions, plus listed versions
1.6.0-1
 None known
node-xmlhttprequest-ssl
Ubuntu:20.04:LTS
 All versions, plus listed versions
1.6.0-1
 None known

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubs-index/CVE-2020-285022021-05-12
PoC in GitHubdpredrag/CVE-2020-285022021-07-28

History

History
RecordedChangedSources
affected, aliasesOSV
affected, exploits, facts
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-28502 is a high vulnerability (CVSS 8.1) in Xmlhttprequest Project Xmlhttprequest, published March 5, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 4.63%, the 91st percentile. Fixed in xmlhttprequest 1.7.0.

References

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