CVE-2026-878648.1HighCWE-130
CVE-2026-87864: IMAP APPEND plus CRLF conversion command injection
Affected: curl · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
0.8%probability of exploitation in the next 30 days
Percentile not published
8.1HighCVSS
LowMediumHighCrit.
DescriptionCVE.org
The full CVE record could not be read just now. It is linked under References, and this page fills in once it has been read.
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- curl
- Published
- October 2026
- Bounty reports
- 4 disclosed on HackerOne
Disclosed bug bounty reports about CVE-2026-87864
The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.
- libcurl RTSP `CURLOPT_CRLF` conversion allows a request body to become a second RTSP requestcurl · 2026 · low severityInformative
- RTSP ANNOUNCE/SET_PARAMETER upload with --use-ascii / CURLOPT_TRANSFERTEXT sends more body bytes than the declared Content-Length (incomplete fix of ecurl · 2026 · low severityInformative
- SCP upload with --crlf sends more bytes than the size declared to the server (same class curl refused for IMAP CVE-2026-87864 and RTSP)curl · 2026 · low severityInformative
- CVE-2026-87864: IMAP APPEND plus CRLF conversion command injectioncurl · 2026Valid
CoverageNo articles yet
No CyberSIXT article names CVE-2026-87864 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.