CVE-2021-23362 | Regular Expression Denial of Service (ReDoS)

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The package hosted-git-info before 3.0.8 are vulnerable to Regular Expression Denial of Service (ReDoS) via regular expression shortcutMatch in the fromUrl function in index.js. The affected regular expression exhibits polynomial worst-case time complexity.

Published: 2021-03-23 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-23362 is rated High Exploit Risk (70/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.61%). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.06% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-23362

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-23362

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.55% 3.61% +3.06%
2 2026-03-04 0.29% 0.55% +0.27%
3 2026-03-01 — 0.29% —

Full EPSS history (47 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-23362

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2021-23362

GitHub Security Advisory for CVE-2021-23362

GHSA-43f8-2h32-f4cj · Severity: medium · Ecosystem: npm — Regular Expression Denial of Service in hosted-git-info

OS Trackers for CVE-2021-23362

vendor priority summary link
debian not yet assigned CVE-2021-23362 not yet assigned priority: Debian including 1 source packages (node-hosted-git-info), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2021-23362
redhat medium — https://access.redhat.com/security/cve/CVE-2021-23362
suse medium CVE-2021-23362 severity moderate: SUSE including 60 source package names (12:nodejs12-12.22.2-4.16.1, 12:npm12-12.22.2-4.16.1, …), 270 product×package rows across 26 product lines (Container bci/node, Container bci/nodejs, … (26 product lines)): Fixed 270. https://www.suse.com/security/cve/CVE-2021-23362/
ubuntu medium CVE-2021-23362 medium priority: Ubuntu including 1 source packages (node-hosted-git-info), 15 status rows across 15 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 9, released 3, DNE 2, ignored 1. https://ubuntu.com/security/CVE-2021-23362

Affected software / configurations for CVE-2021-23362

Vendor Product Version Raw CPE
npmjs hosted-git-info >= 2.0.0, < 2.8.9 cpe:2.3:a:npmjs:hosted-git-info:*:*:*:*:*:*:*:*
npmjs hosted-git-info >= 3.0.0, < 3.0.8 cpe:2.3:a:npmjs:hosted-git-info:*:*:*:*:*:*:*:*
siemens sinec_infrastructure_network_services < 1.0.1.1 cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*

References for CVE-2021-23362

cvelogic Threat Intelligence