How severe is CVE-2023-26136?

CVE-2023-26136 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-26136 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26136?

CVE-2023-26136 affects Salesforce Tough-cookie. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26136?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-26136 published?

CVE-2023-26136 was published on 2023-07-01 and last updated on 2026-06-17.

CVE-2023-26136

CVE-2023-26136 is a medium-severity vulnerability in Salesforce Tough-cookie with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Salesforce Tough-cookie
Published: 2023-07-01
Last modified: 2026-06-17

Description

Versions of the package tough-cookie before 4.1.3 are vulnerable to Prototype Pollution due to improper handling of Cookies when using CookieJar in rejectPublicSuffixes=false mode. This issue arises from the manner in which the objects are initialized.

Frequently asked questions

What is CVE-2023-26136?: Versions of the package tough-cookie before 4.1.3 are vulnerable to Prototype Pollution due to improper handling of Cookies when using CookieJar in rejectPublicSuffixes=false mode. This issue arises from the manner in which the objects are initialized.
How severe is CVE-2023-26136?: CVE-2023-26136 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-26136 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26136?: CVE-2023-26136 affects Salesforce Tough-cookie. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26136?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-26136 published?: CVE-2023-26136 was published on 2023-07-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:salesforce:tough-cookie:*:*:*:*:*:node.js:*:*

More vulnerabilities in Salesforce Tough-cookie

CVE-2017-15010 — High (CVSS 7.5): A ReDoS (regular expression denial of service) flaw was found in the tough-cookie module before 2.3.3 for Node.js. An…
CVE-2016-1000232 — Medium (CVSS 5.3): NodeJS Tough-Cookie version 2.2.2 contains a Regular Expression Parsing vulnerability in HTTP request Cookie Header…

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