CVE-2021-23358

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

4.20% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 90.8% of scored records. A rank, not a probability.

NVD base score

7.2 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-03-29 13:15Z5 YR AGO

Last updated

2025-11-03 21:44Z11 MO AGO

Reserved

2021-01-08

Assigning CNA

snyk

Record state

PUBLISHED

Severity

Low (CVSS 3.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C

Weaknesses

• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.2

Document digest

eb6d5f1b9c8e3e63d1757fa3537a74478909d6196fc425fa12f1d51dcbab1b6a

• snyk.iohttps://snyk.io/vuln/SNYK-JS-UNDERSCORE-1080984x_refsource_MISC
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1081503x_refsource_MISC
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1081504x_refsource_MISC
• snyk.iohttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBJASHKENAS-1081505x_refsource_MISC
• github.comhttps://github.com/jashkenas/underscore/blob/master/modules/template.js%23L71x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20210331 [SECURITY] [DLA 2613-1] underscore security updatehttps://lists.debian.org/debian-lts-announce/2021/03/msg00038.htmlmailing-listx_refsource_MLIST
• www.debian.orgDSA-4883https://www.debian.org/security/2021/dsa-4883vendor-advisoryx_refsource_DEBIAN
• lists.apache.org[cordova-issues] 20210414 [GitHub] [cordova-common] breautek closed issue #163: Security Vulnerability in underscore <= 1.12.0 CVE-2021-23358https://lists.apache.org/thread.html/re69ee408b3983b43e9c4a82a9a17cbbf8681bb91a4b61b46f365aeaf%40%3Cissues.cordova.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[cordova-issues] 20210414 [GitHub] [cordova-common] breautek commented on issue #163: Security Vulnerability in underscore <= 1.12.0 CVE-2021-23358https://lists.apache.org/thread.html/r5df90c46f7000c4aab246e947f62361ecfb849c5a553dcdb0ef545e1%40%3Cissues.cordova.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[cordova-issues] 20210414 [GitHub] [cordova-common] RichardMcSorley opened a new issue #163: Security Vulnerability in underscore <= 1.12.0 CVE-2021-23358https://lists.apache.org/thread.html/raae088abdfa4fbd84e1d19d7a7ffe52bf8e426b83e6599ea9a734dba%40%3Cissues.cordova.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[cordova-issues] 20210414 [GitHub] [cordova-common] RichardMcSorley commented on issue #163: Security Vulnerability in underscore <= 1.12.0 CVE-2021-23358https://lists.apache.org/thread.html/rbc84926bacd377503a3f5c37b923c1931f9d343754488d94e6f08039%40%3Cissues.cordova.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[cordova-issues] 20210414 [GitHub] [cordova-common] RichardMcSorley edited a comment on issue #163: Security Vulnerability in underscore <= 1.12.0 CVE-2021-23358https://lists.apache.org/thread.html/r770f910653772317b117ab4472b0a32c266ee4abbafda28b8a6f9306%40%3Cissues.cordova.apache.org%3Emailing-listx_refsource_MLIST
• www.tenable.comhttps://www.tenable.com/security/tns-2021-14x_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2021-e49f936d9fhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EOKATXXETD2PF3OR36Q5PD2VSVAR6J5Z/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-f278299902https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGEE7U4Z655A2MK5EW4UQQZ7B64XJWBV/vendor-advisoryx_refsource_FEDORA
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20240808-0003/
• seclists.orghttp://seclists.org/fulldisclosure/2025/Apr/14
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20241108-0002/