An allocation of resources without limits or throttling vulnerability exists in curl
CVE-2023-23916
This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 1.7%, top 25% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EG Risk
- 45(Track)EG Risk 45/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity65% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 74.8%
- KEV
- Not listed
Published
February 23, 2023
Last Modified
March 12, 2025
References (12)
- support@hackeronehttps://hackerone.com/reports/1826048
- support@hackeronehttps://lists.debian.org/debian-lts-announce/2023/02/msg00035.html
- support@hackeronehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/
- support@hackeronehttps://security.gentoo.org/glsa/202310-12
- support@hackeronehttps://security.netapp.com/advisory/ntap-20230309-0006/
- support@hackeronehttps://www.debian.org/security/2023/dsa-5365
- af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/1826048
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/02/msg00035.html
- af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/
- af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202310-12
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20230309-0006/
- af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5365
Vendor Advisories for CVE-2023-23916(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(8)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | curl (7.85.0-1ubuntu0.3) @ kinetic | 2026-05-25 | ubuntu |
| redhat | curl-0:7.76.1-14.el9_0.6 | 2023-07-18 | redhat |
| redhat | curl-0:7.61.1-18.el8_4.3 | 2023-06-06 | redhat |
| redhat | jbcs-httpd24-curl | 2023-06-05 | redhat |
| redhat | jbcs-httpd24-curl-0:8.0.1-1.el7jbcs | 2023-06-05 | redhat |
| redhat | curl-0:7.61.1-22.el8_6.6 | 2023-04-18 | redhat |
| redhat | curl-0:7.76.1-19.el9_1.2 | 2023-04-11 | redhat |
| redhat | curl-0:7.61.1-25.el8_7.3 | 2023-03-07 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(8)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
- Microsoft MSRCCVE-2023-239162023-02-24
An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb" making curl end up spending enormous amounts of allocated heap memory or trying to and returning out of memory errors.
- Red HatRHSA-2023:1140MODERATE2023-02-15
RHSA-2023:1140 — Moderate
- Red HatRHSA-2023:1701MODERATE2023-02-15
RHSA-2023:1701 — Moderate
- Red HatRHSA-2023:1842MODERATE2023-02-15
RHSA-2023:1842 — Moderate
- Red HatRHSA-2023:3354MODERATE2023-02-15
RHSA-2023:3354 — Moderate
- Red HatRHSA-2023:3355MODERATE2023-02-15
RHSA-2023:3355 — Moderate
- Red HatRHSA-2023:4139MODERATE2023-02-15
RHSA-2023:4139 — Moderate
- UbuntuUSN-5891-1MEDIUM
curl vulnerabilities
Data Freshness Timeline
(refreshed 13× in last 7d / 48× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 104 total refreshes for this CVE.
- 2026-07-23 02:19 UTCEG score recompute
- 2026-07-22 23:07 UTCEG score recompute
- 2026-07-22 14:06 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2023-23916?
When was CVE-2023-23916 disclosed?
Is CVE-2023-23916 actively exploited?
What is the CVSS score of CVE-2023-23916?
How do I remediate CVE-2023-23916?
Dependency Blast Radius
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