# CVE-2026-77014

## Summary

- **CVE ID:** CVE-2026-77014
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
- **CWE:** CWE-197
- **Published:** Aug 20, 2026
- **Last Modified:** Aug 25, 2026

## Description

A flaw was found in libsoup's SoupServer HTTP Range header processing. The sort_ranges() comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INT_MAX. This causes silent omission of requested byte ranges from HTTP 206 Partial Content responses on resources larger than approximately 2 GB.

## Affected Products

No affected products listed.

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2026-77014)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2520143)
- [CNA](https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/550)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.23%
- **EPSS Percentile:** 14.0

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._