JLSEC-2026-277

Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-277.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-277.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2026-277
Upstream
  • EUVD-2026-19969
  • GHSA-vgxx-5xj5-q97x
Published
2026-04-27T18:33:55.942Z
Modified
2026-07-25T18:24:11.181370748Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can...
Details

Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to a malicious peer.

Impact summary: The uninitialized buffer might contain sensitive data from the previous execution of the application process which leads to sensitive data leakage to an attacker.

RSA_public_encrypt() returns the number of bytes written on success and -1 on error. The affected code tests only whether the return value is non-zero. As a result, if RSA encryption fails, encapsulation can still return success to the caller, set the output lengths, and leave the caller to use the contents of the ciphertext buffer as if a valid KEM ciphertext had been produced.

If applications use EVP_PKEY_encapsulate() with RSA/RSASVE on an attacker-supplied invalid RSA public key without first validating that key, then this may cause stale or uninitialized contents of the caller-provided ciphertext buffer to be disclosed to the attacker in place of the KEM ciphertext.

As a workaround calling EVP_PKEY_public_check() or EVP_PKEY_public_check_quick() before EVP_PKEY_encapsulate() will mitigate the issue.

The FIPS modules in 3.6, 3.5, 3.4, 3.3, 3.1 and 3.0 are affected by this issue.

Database specific
{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31790",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-31790",
            "published": "2026-04-07T22:16:21.770Z",
            "id": "CVE-2026-31790",
            "imported": "2026-07-17T21:33:24.669Z",
            "modified": "2026-06-17T10:34:28.237Z",
            "database_specific": {
                "status": "Modified"
            }
        },
        {
            "modified": "2026-05-12T15:31:16Z",
            "url": "https://api.github.com/advisories/GHSA-vgxx-5xj5-q97x",
            "published": "2026-04-08T00:30:26Z",
            "id": "GHSA-vgxx-5xj5-q97x",
            "imported": "2026-07-17T21:33:24.816Z",
            "html_url": "https://github.com/advisories/GHSA-vgxx-5xj5-q97x"
        },
        {
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-19969",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-19969",
            "published": "2026-04-07T22:00:56Z",
            "id": "EUVD-2026-19969",
            "imported": "2026-07-17T21:33:34.787Z",
            "modified": "2026-05-12T12:09:06Z"
        }
    ]
}
References

Affected packages

Julia / AppBundler

Package

Name
AppBundler
Purl
pkg:julia/AppBundler?uuid=40eb83ae-c93a-480c-8f39-f018b568f472

Affected ranges

Type
SEMVER
Events
Introduced
1.0.0

Database specific

source
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-277.json"

Julia / OpenSSL_jll

Package

Name
OpenSSL_jll
Purl
pkg:julia/OpenSSL_jll?uuid=458c3c95-2e84-50aa-8efc-19380b2a3a95

Affected ranges

Type
SEMVER
Events
Introduced
3.0.8+0
Fixed
3.0.20+0
Introduced
3.5.0+0
Fixed
3.5.6+0

Database specific

source
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-277.json"

Julia / Openresty_jll

Package

Name
Openresty_jll
Purl
pkg:julia/Openresty_jll?uuid=87da34d4-7b1b-5a94-8376-8cb65bf3132c

Affected ranges

Type
SEMVER
Events
Introduced
1.27.1+0

Database specific

source
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-277.json"