No exploitation reportedFix available

CVE-2020-11080

Q: Is CVE-2020-11080 actively exploited?

Active exploitation of CVE-2020-11080 has not been confirmed. Its EPSS score was 5.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-11080?

CVE-2020-11080 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2020-06-03
Fixed in14.4.1 · 12.18.0 · 12.12.1 · 10.21.0 · 10.12.1
WeaknessCWE-400 · CWE-707

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.

Timeline

dates in UTC

2020-06-0323:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-11080?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-11080?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD

Node.js

Branch	Affected	Fixed in	Source
14.x	≥ 14.0.0, < 14.4.1	14.4.1	OSV
12.x	≥ 12.13.0, < 12.18.0	12.18.0	NVD · OSV
12.x	≥ 12.0.0, < 12.12.1	12.12.1	OSV
10.x	≥ 10.13.0, < 10.21.0	10.21.0	NVD · OSV
10.x	≥ 10.0.0, < 10.12.1	10.12.1	OSV
10.x	≥ 10.0.0, ≤ 10.12.0	no fix published	NVD
12.x	≥ 12.0.0, ≤ 12.12.0	no fix published	NVD
14.x	≥ 14.0.0, ≤ 14.4.0	no fix published	NVD

MySQL

Branch	Affected	Fixed in	Source
7.3	≥ 7.3.0, ≤ 7.3.30	no fix published	NVD
7.4	≥ 7.4.0, ≤ 7.4.29	no fix published	NVD
7.5	≥ 7.5.0, ≤ 7.5.19	no fix published	NVD
7.6	≥ 7.6.0, ≤ 7.6.15	no fix published	NVD
8.0	≥ 8.0.0, ≤ 8.0.21	no fix published	NVD

Debian debian linux

Branch	Affected	Fixed in	Source
9.0	= 9.0	no fix published	NVD
10.0	= 10.0	no fix published	NVD

7 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

libnghttp2AlmaLinux:8all versions · fixed in 1.33.0-3.el8_2.1and 2 other packages
nodejs-nodemonAlmaLinux:8all versions · fixed in 1.18.3-1.module_el8.3.0+2023+d2377ea3
nodejs-nodemonAlmaLinux:8all versions · fixed in 1.18.3-1.module_el8.3.0+2047+b07ac28e
nodejs-packagingAlmaLinux:8all versions · fixed in 17-3.module_el8.3.0+2023+d2377ea3
nodejs-packagingAlmaLinux:8all versions · fixed in 17-3.module_el8.4.0+2224+b07ac28e
nodejs-packagingAlmaLinux:8all versions · fixed in 17-3.module_el8.4.0+2521+c668cc9f

Full record on NVD

Fix

Update Node.js to 14.4.1 · 12.18.0 · 12.12.1 · 10.21.0 · 10.12.1

Advisories and patches

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-06-09
OpenCVESSVC decisionnone—
CNACVSS 3.13.7read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-707read 2026-10-23
NVDweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score5.3 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2020-06-03
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-11080?

Is CVE-2020-11080 actively exploited?

Active exploitation of CVE-2020-11080 has not been confirmed. Its EPSS score was 5.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-11080?

CVE-2020-11080 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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