How severe is CVE-2023-52266?

CVE-2023-52266 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 none, and availability high.

Is CVE-2023-52266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-52266?

CVE-2023-52266 affects Hongliuliao Ehttp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-52266?

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-2023-52266 published?

CVE-2023-52266 was published on 2023-12-31 and last updated on 2026-06-17.

CVE-2023-52266

CVE-2023-52266 is a high-severity vulnerability in Hongliuliao Ehttp 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. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Hongliuliao Ehttp
Published: 2023-12-31
Last modified: 2026-06-17

Description

ehttp 1.0.6 before 17405b9 has an epoll_socket.cpp read_func use-after-free. An attacker can make many connections over a short time to trigger this.

Frequently asked questions

What is CVE-2023-52266?: ehttp 1.0.6 before 17405b9 has an epoll_socket.cpp read_func use-after-free. An attacker can make many connections over a short time to trigger this.
How severe is CVE-2023-52266?: CVE-2023-52266 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 none, and availability high.
Is CVE-2023-52266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-52266?: CVE-2023-52266 affects Hongliuliao Ehttp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-52266?: 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-2023-52266 published?: CVE-2023-52266 was published on 2023-12-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hongliuliao:ehttp:1.0.6:*:*:*:*:*:*:*

More vulnerabilities in Hongliuliao Ehttp

CVE-2023-52267 — High (CVSS 7.5): ehttp 1.0.6 before 17405b9 has a simple_log.cpp _log out-of-bounds-read during error logging for long strings.

All CVEs affecting Hongliuliao Ehttp →

Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

Browse all CWE-416 (Use After Free) vulnerabilities →