How severe is CVE-2021-35502?

CVE-2021-35502 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35502 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35502?

CVE-2021-35502 affects Misp-project Misp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35502?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-35502 published?

CVE-2021-35502 was published on 2021-06-25 and last updated on 2026-06-22.

CVE-2021-35502

CVE-2021-35502 is a critical-severity vulnerability in Misp-project Misp with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Misp-project Misp
Published: 2021-06-25
Last modified: 2026-06-22

Description

app/View/Elements/genericElements/IndexTable/Fields/generic_field.ctp in MISP 2.4.144 does not sanitize certain data related to generic-template:index.

Frequently asked questions

What is CVE-2021-35502?: app/View/Elements/genericElements/IndexTable/Fields/generic_field.ctp in MISP 2.4.144 does not sanitize certain data related to generic-template:index.
How severe is CVE-2021-35502?: CVE-2021-35502 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35502 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35502?: CVE-2021-35502 affects Misp-project Misp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35502?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-35502 published?: CVE-2021-35502 was published on 2021-06-25 and last updated on 2026-06-22.

References

https://github.com/MISP/MISP/commit/2fde6476dc3173affc61874ba2adb35400a8fda5

Affected products (1)

cpe:2.3:a:misp-project:misp:2.4.144:*:*:*:*:*:*:*

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