CVE-2018-19991

CRITICALNVD 9.89.8—Trending — 3 sources updated this week

9.8

VeryNginx 0.3.3 allows remote attackers to bypass the Web Application Firewall feature because there is no error handler (for get_uri_args or get_post_args) to block the API misuse described in CVE-2018-9230.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 65.4%
KEV: Not listed

Published

December 10, 2018

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://github.com/alexazhou/VeryNginx/issues/218
af854a3a-2127-422b-91ae-364da2661108https://github.com/alexazhou/VeryNginx/issues/218

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-755Improper Handling of Exceptional Conditions

Data Freshness Timeline

(refreshed 14× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 00:27 UTCEG score recompute
2026-05-28 00:27 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-19991?

CVE-2018-19991 is a critical vulnerability published on December 10, 2018. VeryNginx 0.3.3 allows remote attackers to bypass the Web Application Firewall feature because there is no error handler (for geturiargs or getpostargs) to block the API misuse described in CVE-2018-9230.

When was CVE-2018-19991 disclosed?

CVE-2018-19991 was first published in the National Vulnerability Database on December 10, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-19991 actively exploited?

CVE-2018-19991 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-19991?

CVE-2018-19991 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-19991?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-19991, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-19991

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-19991?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)