Answer in brief
CVE-2024-2398 records a High severity (CVSS 8.6) vulnerability in HTTP/2 push headers memory-leak. The current sources do not mark it as known exploited. The current feed maps curl/curl (generic), curl/curl (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps curl/curl (generic), curl/curl (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| curl/curlgeneric | >=8.6.0 <=8.6.0 || >=8.5.0 <=8.5.0 || >=8.4.0 <=8.4.0 || >=8.3.0 <=8.3.0 || >=8.2.1 <=8.2.1 || >=8.2.0 <=8.2.0 || >=8.1.2 <=8.1.2 || >=8.1.1 <=8.1.1 || >=8.1.0 <=8.1.0 || >=8.0.1 <=8.0.1 || >=8.0.0 <=8.0.0 || >=7.88.1 <=7.88.1 || >=7.88.0 <=7.88.0 || >=7.87.0 <=7.87.0 || >=7.86.0 <=7.86.0 || >=7.85.0 <=7.85.0 || >=7.84.0 <=7.84.0 || >=7.83.1 <=7.83.1 || >=7.83.0 <=7.83.0 || >=7.82.0 <=7.82.0 || >=7.81.0 <=7.81.0 || >=7.80.0 <=7.80.0 || >=7.79.1 <=7.79.1 || >=7.79.0 <=7.79.0 || >=7.78.0 <=7.78.0 || >=7.77.0 <=7.77.0 || >=7.76.1 <=7.76.1 || >=7.76.0 <=7.76.0 || >=7.75.0 <=7.75.0 || >=7.74.0 <=7.74.0 || >=7.73.0 <=7.73.0 || >=7.72.0 <=7.72.0 || >=7.71.1 <=7.71.1 || >=7.71.0 <=7.71.0 || >=7.70.0 <=7.70.0 || >=7.69.1 <=7.69.1 || >=7.69.0 <=7.69.0 || >=7.68.0 <=7.68.0 || >=7.67.0 <=7.67.0 || >=7.66.0 <=7.66.0 || >=7.65.3 <=7.65.3 || >=7.65.2 <=7.65.2 || >=7.65.1 <=7.65.1 || >=7.65.0 <=7.65.0 || >=7.64.1 <=7.64.1 || >=7.64.0 <=7.64.0 || >=7.63.0 <=7.63.0 || >=7.62.0 <=7.62.0 || >=7.61.1 <=7.61.1 || >=7.61.0 <=7.61.0 || >=7.60.0 <=7.60.0 || >=7.59.0 <=7.59.0 || >=7.58.0 <=7.58.0 || >=7.57.0 <=7.57.0 || >=7.56.1 <=7.56.1 || >=7.56.0 <=7.56.0 || >=7.55.1 <=7.55.1 || >=7.55.0 <=7.55.0 || >=7.54.1 <=7.54.1 || >=7.54.0 <=7.54.0 || >=7.53.1 <=7.53.1 || >=7.53.0 <=7.53.0 || >=7.52.1 <=7.52.1 || >=7.52.0 <=7.52.0 || >=7.51.0 <=7.51.0 || >=7.50.3 <=7.50.3 || >=7.50.2 <=7.50.2 || >=7.50.1 <=7.50.1 || >=7.50.0 <=7.50.0 || >=7.49.1 <=7.49.1 || >=7.49.0 <=7.49.0 || >=7.48.0 <=7.48.0 || >=7.47.1 <=7.47.1 || >=7.47.0 <=7.47.0 || >=7.46.0 <=7.46.0 || >=7.45.0 <=7.45.0 || >=7.44.0 <=7.44.0 | Not reported |
| curl/curlgeneric | >=7.44.0 <=8.6.0 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SINEC NMSgeneric | >=0 <V3.0 SP1 | V3.0 SP1, V3.0 |
| Siemens/SINEMA Remote Connect Clientgeneric | >=0 <V3.2 SP2 | V3.2 SP2, V3.2 |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
Published upstream
Mar 27, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
When an application tells libcurl it wants to allow HTTP/2 server push, and the amount of received headers for the push surpasses the maximum allowed limit (1000), libcurl aborts the server push. When aborting, libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory. Further, this error condition fails silently and is therefore not easily detected by an application.
Quoted source text, attributed separately from HOL analysis.