CVE-2018-16979

MEDIUMNVD 6.16.1—Trending — 3 sources updated this weekElevated

6.1

Monstra CMS V3.0.4 allows HTTP header injection in the plugins/captcha/crypt/cryptographp.php cfg parameter, a related issue to CVE-2012-2943.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 93.0%
KEV: Not listed

Published

September 12, 2018

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://github.com/howchen/howchen/issues/4
af854a3a-2127-422b-91ae-364da2661108https://github.com/howchen/howchen/issues/4

Weakness Classification(1)

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

CWE-113HTTP Response Splitting

Data Freshness Timeline

(refreshed 11× 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
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:28 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 03:15 UTCEG score recompute
2026-05-28 03:15 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 02:14 UTCOSV refresh
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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Nucleihttp/cves/2018/CVE-2018-16979.yaml
First seen Jan 1, 2018
Monstra CMS 3.0.4 - HTTP Header Injection
Open source ↗

Frequently asked(5)

What is CVE-2018-16979?

CVE-2018-16979 is a medium vulnerability published on September 12, 2018. Monstra CMS V3.0.4 allows HTTP header injection in the plugins/captcha/crypt/cryptographp.php cfg parameter, a related issue to CVE-2012-2943.

When was CVE-2018-16979 disclosed?

CVE-2018-16979 was first published in the National Vulnerability Database on September 12, 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-2018-16979 actively exploited?

CVE-2018-16979 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-16979?

CVE-2018-16979 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2018-16979?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-16979, 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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