CVE-2026-15977

HIGH
Published Jul 30, 2026 Modified Aug 4, 2026 CWE-522

Description

SGLang contains a credential leakage vulnerability in the /server_info endpoint, which will return API keys and SSL keyfile information when only the --admin-api-key is configured.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0034
Probability of exploitation
0.27%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-522 CWE-522

Affected Products

Vendor Product
lmsys sglang

References

Frequently Asked Questions

What is CVE-2026-15977? +
SGLang contains a credential leakage vulnerability in the /server_info endpoint, which will return API keys and SSL keyfile information when only the --admin-api-key is configured. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-15977? +
CVE-2026-15977 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0034, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-15977? +
CVE-2026-15977 affects products from lmsys, specifically: sglang. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-15977? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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