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Vulnerabilities

Vulnerability · CVE-2020-8287

Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 allow two copies of a header field in an HTTP request (for example, two Transfer-Encoding header fields).

Published Jan 6, 2021 · catalog updated Oct 26, 2026 · Node.js versions before 10.23.1,

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2020-8287 is not in CISA KEV. FIRST estimates a 16.30% chance of exploitation in the next 30 days. Check whether you run Node.js versions before 10.23.1,.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Node.js versions before 10.23.1,).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
16.30%
Remediation
Advisory link
Affected products
Debian:12 http-parser · Debian:12 nodejs · Debian:13 http-parser · Debian:13 nodejs · Debian:14 http-parser · Debian:14 nodejs

Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 allow two copies of a header field in an HTTP request (for example, two Transfer-Encoding header fields). In this case, Node.js identifies the first header field and ignores the second. This can lead to HTTP Request Smuggling.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 http-parser0 → 2.9.4-5
  • Debian:12 nodejs0 → 12.20.1~dfsg-1
  • Debian:13 http-parser0 → 2.9.4-5
  • Debian:13 nodejs0 → 12.20.1~dfsg-1
  • Debian:14 http-parser0 → 2.9.4-5
  • Debian:14 nodejs0 → 12.20.1~dfsg-1

How to fix CVE-2020-8287

  • Upgrade

    CVE-2020-8287 lists a fix boundary at 2.9.4-5. Compare the installed build with that boundary before you change production.

  • Version check

    Fixed in 2.9.4-5 · 5 other ranges on the advisory

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-8287 is not in CISA KEV. FIRST estimates a 16.30% chance of exploitation in the next 30 days. Check whether you run Node.js versions before 10.23.1,.

Which versions are affected?

Compare what you have installed with 0 → 2.9.4-5, 0 → 12.20.1~dfsg-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 16.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 6, 2021 · OpenSSF OSV / OSV Scanner

    Detected

    Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 allow two copies of a header field in an HTTP request (for example, two Transfer-Encoding header fields). In this case, Node.js identifies the first header field and ignores the second. This can lead to HTTP Request Smuggling.

  2. Oct 26, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    http-parser fixed in 2.9.4-5; http-parser fixed in 2.9.4-5; http-parser fixed in 2.9.4-5; nodejs fixed in 12.20.1~dfsg-1

  3. Oct 26, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    http-parser fixed in 2.9.4-5

  4. Oct 26, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    nodejs fixed in 12.20.1~dfsg-1

  5. Oct 26, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 allow two copies of a header field in an HTTP request (for example, two Transfer-Encoding header fields). In this case, Node.js identifies the first header field and ignores the second. This can lead to HTTP Request Smuggling.

Sources

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 26, 2026
  • OpenSSF OSV / OSV ScannerOct 26, 2026