How severe is CVE-2021-4177?

CVE-2021-4177 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-4177 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4177?

CVE-2021-4177 affects Livehelperchat Live Helper Chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4177?

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

When was CVE-2021-4177 published?

CVE-2021-4177 was published on 2021-12-28 and last updated on 2026-06-17.

CVE-2021-4177

CVE-2021-4177 is a medium-severity vulnerability in Livehelperchat Live Helper Chat with a CVSS 3.x base score of 5.3. 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-209.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-209
Affected product: Livehelperchat Live Helper Chat
Published: 2021-12-28
Last modified: 2026-06-17

Description

livehelperchat is vulnerable to Generation of Error Message Containing Sensitive Information

Frequently asked questions

What is CVE-2021-4177?: livehelperchat is vulnerable to Generation of Error Message Containing Sensitive Information
How severe is CVE-2021-4177?: CVE-2021-4177 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-4177 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4177?: CVE-2021-4177 affects Livehelperchat Live Helper Chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4177?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4177 published?: CVE-2021-4177 was published on 2021-12-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:livehelperchat:live_helper_chat:*:*:*:*:*:*:*:*

More vulnerabilities in Livehelperchat Live Helper Chat

CVE-2024-27516 — Critical (CVSS 9.8): Server-Side Template Injection (SSTI) vulnerability in livehelperchat before 4.34v, allows remote attackers to execute…
CVE-2022-0935 — High (CVSS 8.8): Host Header injection in password Reset in GitHub repository livehelperchat/livehelperchat prior to 3.97.
CVE-2021-4131 — High (CVSS 8.8): livehelperchat is vulnerable to Cross-Site Request Forgery (CSRF)
CVE-2022-1235 — High (CVSS 8.2): Weak secrethash can be brute-forced in GitHub repository livehelperchat/livehelperchat prior to 3.96.
CVE-2022-1213 — High (CVSS 8.1): SSRF filter bypass port 80, 433 in GitHub repository livehelperchat/livehelperchat prior to 3.67v. An attacker could…
CVE-2022-1191 — High (CVSS 8.1): SSRF on index.php/cobrowse/proxycss/ in GitHub repository livehelperchat/livehelperchat prior to 3.96.

All CVEs affecting Livehelperchat Live Helper Chat →

Other CWE-209 (Generation of Error Message Containing Sensitive Information) vulnerabilities

CVE-2025-62168 — Critical (CVSS 10.0): Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication…
CVE-2025-68110 — Critical (CVSS 9.9): ChurchCRM is an open-source church management system. Versions prior to 6.5.3 may disclose database information in an…
CVE-2025-46658 — Critical (CVSS 9.8): An issue was discovered in ExonautWeb in 4C Strategies Exonaut 21.6. There are verbose error messages.
CVE-2024-28285 — Critical (CVSS 9.8): A Fault Injection vulnerability in the SymmetricDecrypt function in cryptopp/elgamal.h of Cryptopp Crypto++ 8.9, allows…
CVE-2023-40767 — Critical (CVSS 9.8): User enumeration is found in in PHPJabbers Make an Offer Widget v1.0. This issue occurs during password recovery, where…
CVE-2023-40766 — Critical (CVSS 9.8): User enumeration is found in in PHPJabbers Ticket Support Script v3.2. This issue occurs during password recovery,…

Browse all CWE-209 (Generation of Error Message Containing Sensitive Information) vulnerabilities →