How severe is CVE-2021-30185?

CVE-2021-30185 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-30185 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30185?

CVE-2021-30185 affects Cern Indico. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30185?

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

When was CVE-2021-30185 published?

CVE-2021-30185 was published on 2021-04-07 and last updated on 2026-06-17.

CVE-2021-30185

CVE-2021-30185 is a high-severity vulnerability in Cern Indico with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cern Indico
Published: 2021-04-07
Last modified: 2026-06-17

Description

CERN Indico before 2.3.4 can use an attacker-supplied Host header in a password reset link.

Frequently asked questions

What is CVE-2021-30185?: CERN Indico before 2.3.4 can use an attacker-supplied Host header in a password reset link.
How severe is CVE-2021-30185?: CVE-2021-30185 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-30185 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30185?: CVE-2021-30185 affects Cern Indico. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30185?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-30185 published?: CVE-2021-30185 was published on 2021-04-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:*

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