How severe is CVE-2021-34243?

CVE-2021-34243 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-34243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34243?

CVE-2021-34243 affects Icehrm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34243?

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

When was CVE-2021-34243 published?

CVE-2021-34243 was published on 2021-06-22 and last updated on 2026-06-17.

CVE-2021-34243

CVE-2021-34243 is a medium-severity vulnerability in Icehrm with a CVSS 3.x base score of 5.4. 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: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Icehrm
Published: 2021-06-22
Last modified: 2026-06-17

Description

A stored cross site scripting (XSS) vulnerability was discovered in Ice Hrm 29.0.0.OS which allows attackers to execute arbitrary web scripts or HTML via a crafted file uploaded into the Document Management tab. The exploit is triggered when a user visits the upload location of the crafted file.

Frequently asked questions

What is CVE-2021-34243?: A stored cross site scripting (XSS) vulnerability was discovered in Ice Hrm 29.0.0.OS which allows attackers to execute arbitrary web scripts or HTML via a crafted file uploaded into the Document Management tab. The exploit is triggered when a user visits the upload location of the crafted file.
How severe is CVE-2021-34243?: CVE-2021-34243 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-34243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34243?: CVE-2021-34243 affects Icehrm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-34243 published?: CVE-2021-34243 was published on 2021-06-22 and last updated on 2026-06-17.

References

https://github.com/xoffense/POC/blob/main/Stored%20XSS%20via%20malicious%20file%20upload%20in%20ICE%20Hrm%20Version%2029.0.0.OS.md

Affected products (1)

cpe:2.3:a:icehrm:icehrm:29.0.0.os:*:*:*:*:*:*:*

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