Vulnerability Description
Stack-based Buffer Overflow vulnerability in Erlang OTP (erl_interface) allows Stack-based Buffer Overflow. This vulnerability is associated with program file lib/erl_interface/src/misc/ei_printterm.c and program routine ei_s_print_term. The C function ei_s_print_term uses an internal 2000-character stack buffer to format terms. When called with an encoded Erlang term containing a very large integer (encoded representation exceeding 2000 characters), the buffer overflows. The overflow bytes are restricted to the ASCII values of 0-9 and A-F, which limits exploitation to Denial of Service. The companion function ei_print_term, which prints directly to a FILE instead of a memory buffer, does not contain this bug. This issue affects OTP from OTP 17.0 before OTP 29.0.2, OTP 28.5.0.2 and OTP 27.3.4.13, corresponding to erl_interface from 3.7.16 before 5.8.1, 5.7.0.1 and 5.5.2.1.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Erlang | Erl Interface | >= 3.7.16, < 5.5.2.1 |
| Erlang | Erlang\/Otp | >= 17.0, < 27.3.4.13 |
Related Weaknesses (CWE)
References
- https://cna.erlef.org/cves/CVE-2026-49760.htmlMitigationThird Party Advisory
- https://github.com/erlang/otp/commit/0bef277b2d39dc8babb9ceb4f5d0a456f3007111Patch
- https://github.com/erlang/otp/security/advisories/GHSA-xcxj-5pg2-v72jMitigationVendor Advisory
- https://osv.dev/vulnerability/EEF-CVE-2026-49760MitigationThird Party Advisory
- https://www.erlang.org/doc/system/versions.html#order-of-versionsProduct
FAQ
What is CVE-2026-49760?
CVE-2026-49760 is a vulnerability with a CVSS score of 5.5 (MEDIUM). Stack-based Buffer Overflow vulnerability in Erlang OTP (erl_interface) allows Stack-based Buffer Overflow. This vulnerability is associated with program file lib/erl_interface/src/misc/ei_printterm....
How severe is CVE-2026-49760?
CVE-2026-49760 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49760?
Check the references section above for vendor advisories and patch information. Affected products include: Erlang Erl Interface, Erlang Erlang\/Otp.