How severe is CVE-2021-4258?

CVE-2021-4258 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-4258 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4258?

CVE-2021-4258 affects Whohas Project Whohas. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4258?

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

When was CVE-2021-4258 published?

CVE-2021-4258 was published on 2022-12-19 and last updated on 2026-06-17.

CVE-2021-4258

CVE-2021-4258 is a low-severity vulnerability in Whohas Project Whohas with a CVSS 3.x base score of 3.7. 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-319.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Whohas Project Whohas
Published: 2022-12-19
Last modified: 2026-06-17

Description

A vulnerability was found in whohas. It has been rated as problematic. This issue affects some unknown processing of the component Package Information Handler. The manipulation leads to cleartext transmission of sensitive information. The attack may be initiated remotely. The real existence of this vulnerability is still doubted at the moment. The name of the patch is 667c3e2e9178f15c23d7918b5db25cd0792c8472. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216251. NOTE: Most sources redirect to the encrypted site which limits the possibilities of an attack.

Frequently asked questions

What is CVE-2021-4258?: A vulnerability was found in whohas. It has been rated as problematic. This issue affects some unknown processing of the component Package Information Handler. The manipulation leads to cleartext transmission of sensitive information. The attack may be initiated remotely. The real existence of this vulnerability is still doubted at the moment. The name of the patch is 667c3e2e9178f15c23d7918b5db25cd0792c8472. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216251. NOTE: Most sources redirect to the encrypted site which limits the possibilities of an attack.
How severe is CVE-2021-4258?: CVE-2021-4258 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-4258 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4258?: CVE-2021-4258 affects Whohas Project Whohas. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4258?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4258 published?: CVE-2021-4258 was published on 2022-12-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:whohas_project:whohas:*:*:*:*:*:*:*:*

More vulnerabilities in Whohas Project Whohas

CVE-2020-20178 — High (CVSS 7.5): Ethereum 0xe933c0cd9784414d5f278c114904f5a84b396919#code.sol latest version is affected by a denial of service…

All CVEs affecting Whohas Project Whohas →

Other CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities

CVE-2025-4378 — Critical (CVSS 10.0): Cleartext Transmission of Sensitive Information, Use of Hard-coded Credentials vulnerability in Ataturk University…
CVE-2025-47419 — Critical (CVSS 10.0): Cleartext Transmission of Sensitive Information vulnerability in Crestron Automate VX allows Sniffing Network…
CVE-2026-48902 — Critical (CVSS 9.8): The password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't…
CVE-2025-34271 — Critical (CVSS 9.8): Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when…
CVE-2025-32880 — Critical (CVSS 9.8): An issue was discovered on COROS PACE 3 devices through 3.0808.0. It implements a function to connect the watch to a…
CVE-2025-26199 — Critical (CVSS 9.8): CloudClassroom-PHP-Project v1.0 is affected by an insecure credential transmission vulnerability. The application…

Browse all CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities →