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Vulnerability record · CVE-2021-27290 · published 12 March 2021

CVE-2021-27290: Ssri project ssri vulnerability

Ssri Project · Ssri

ssri 5.2.2-8.0.0, fixed in 8.0.1, processes SRIs using a regular expression which is vulnerable to a denial of service. Malicious SRIs could take an extremely long time to process, leading to denial of service. This issue only affects consumers using the strict option.

7.5 CVSS 3.1 High EPSS 4.7% · top 8.3%
7.5CVSS 3.1 base score, v2 4.3
4.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
10References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

ssri 5.2.2-8.0.0, fixed in 8.0.1, processes SRIs using a regular expression which is vulnerable to a denial of service. Malicious SRIs could take an extremely long time to process, leading to denial of service. This issue only affects consumers using the strict option.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf PatchThird Party Advisory
https://doyensec.com/resources/Doyensec_Advisory_ssri_redos.pdf ExploitPatchThird Party Advisory
https://github.com/yetingli/SaveResults/blob/main/pdf/ssri-redos.pdf ExploitThird Party Advisory
https://npmjs.com Product
https://www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf PatchThird Party Advisory
https://doyensec.com/resources/Doyensec_Advisory_ssri_redos.pdf ExploitPatchThird Party Advisory
https://github.com/yetingli/SaveResults/blob/main/pdf/ssri-redos.pdf ExploitThird Party Advisory
https://npmjs.com Product
https://www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-27290), CISA KEV, FIRST EPSS (scores of 2026-10-16). This page is refreshed as NVD updates the record.