CVE-2018-8098

MEDIUMNVD 6.56.5—

6.5

Integer overflow in the index.c:read_entry() function while decompressing a compressed prefix length in libgit2 before v0.26.2 allows an attacker to cause a denial of service (out-of-bounds read) via a crafted repository index file.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 73.3%
KEV: Not listed

Published

March 14, 2018

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://github.com/libgit2/libgit2/commit/3207ddb0103543da8ad2139ec6539f590f9900c1
cve@mitrehttps://github.com/libgit2/libgit2/commit/3db1af1f370295ad5355b8f64b865a2a357bcac0
cve@mitrehttps://libgit2.github.com/security/
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/03/msg00031.html
af854a3a-2127-422b-91ae-364da2661108https://github.com/libgit2/libgit2/commit/3207ddb0103543da8ad2139ec6539f590f9900c1
af854a3a-2127-422b-91ae-364da2661108https://github.com/libgit2/libgit2/commit/3db1af1f370295ad5355b8f64b865a2a357bcac0
af854a3a-2127-422b-91ae-364da2661108https://libgit2.github.com/security/
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html

Weakness Classification(1)

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

CWE-190Integer Overflow or Wraparound

Data Freshness Timeline

(refreshed 9× 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.

2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 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 13:43 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 10:32 UTCEG score recompute
2026-05-28 10:31 UTCGHSA enrichment
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-2018-8098?

CVE-2018-8098 is a medium vulnerability published on March 14, 2018. Integer overflow in the index.c:read_entry() function while decompressing a compressed prefix length in libgit2 before v0.26.2 allows an attacker to cause a denial of service (out-of-bounds read) via a crafted repository index file.

When was CVE-2018-8098 disclosed?

CVE-2018-8098 was first published in the National Vulnerability Database on March 14, 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-2018-8098 actively exploited?

CVE-2018-8098 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-8098?

CVE-2018-8098 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2018-8098?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-8098, 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.

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CVE-2018-8098

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-8098?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (8)

Frequently asked(5)

Related CVEs(same CWE)