How severe is CVE-2021-4274?

CVE-2021-4274 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-4274 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4274?

CVE-2021-4274 affects Bird-lg Project Bird-lg. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4274?

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

When was CVE-2021-4274 published?

CVE-2021-4274 was published on 2022-12-21 and last updated on 2026-06-17.

CVE-2021-4274

CVE-2021-4274 is a low-severity vulnerability in Bird-lg Project Bird-lg with a CVSS 3.x base score of 3.5. 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-79.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Bird-lg Project Bird-lg
Published: 2022-12-21
Last modified: 2026-06-17

Description

A vulnerability, which was classified as problematic, has been found in sileht bird-lg. This issue affects some unknown processing of the file templates/layout.html. The manipulation of the argument request_args leads to cross site scripting. The attack may be initiated remotely. The name of the patch is ef6b32c527478fefe7a4436e10b96ee28ed5b308. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216479.

Frequently asked questions

What is CVE-2021-4274?: A vulnerability, which was classified as problematic, has been found in sileht bird-lg. This issue affects some unknown processing of the file templates/layout.html. The manipulation of the argument request_args leads to cross site scripting. The attack may be initiated remotely. The name of the patch is ef6b32c527478fefe7a4436e10b96ee28ed5b308. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216479.
How severe is CVE-2021-4274?: CVE-2021-4274 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-4274 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4274?: CVE-2021-4274 affects Bird-lg Project Bird-lg. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4274?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4274 published?: CVE-2021-4274 was published on 2022-12-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bird-lg_project:bird-lg:-:*:*:*:*:*:*:*

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