How severe is CVE-2019-18954?

CVE-2019-18954 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 none, integrity none, and availability low.

Is CVE-2019-18954 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18954?

CVE-2019-18954 affects Netease Pomelo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18954?

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

When was CVE-2019-18954 published?

CVE-2019-18954 was published on 2019-11-14 and last updated on 2026-06-17.

CVE-2019-18954

CVE-2019-18954 is a medium-severity vulnerability in Netease Pomelo 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-668.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Netease Pomelo
Published: 2019-11-14
Last modified: 2026-06-17

Description

Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.

Frequently asked questions

What is CVE-2019-18954?: Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.
How severe is CVE-2019-18954?: CVE-2019-18954 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 none, integrity none, and availability low.
Is CVE-2019-18954 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18954?: CVE-2019-18954 affects Netease Pomelo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18954?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-18954 published?: CVE-2019-18954 was published on 2019-11-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:netease:pomelo:2.2.5:*:*:*:*:*:*:*

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