# CVE-2025-61730: Handshake messages may be processed at the incorrect encryption level in crypto/tls


- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 28 Jan 2026
- **Updated:** 2 Feb 2026
- **Also known as:** AZL-75648, AZL-75701, AZL-75731, AZL-78933, AZL-98580, BELL-CVE-2025-61730, BIT-golang-2025-61730, CLEANSTART-2026-DD22310, CLEANSTART-2026-PU86429, CLEANSTART-2026-RL07145, CLEANSTART-2026-XW05071, DEBIAN-CVE-2025-61730, ECHO-39f7-3e2b-795f, GHSA-gr56-3gp6-6gmj, GO-2026-4340, MINI-23p5-pmfg-3xhp, MINI-26jf-w36x-v7wq, MINI-27j8-h5rj-35x8, MINI-27r3-526r-r5hq, MINI-27v2-5rx4-7hj4, MINI-2cfg-xqp2-98xp, MINI-2fw2-g768-w4g5, MINI-2fw5-r345-v4pf, MINI-2h9j-xxrg-w6w9, MINI-2hhp-wcqw-vxg2, MINI-2j6w-c39x-qc95, MINI-2m2h-xpwr-7p43, MINI-2qmx-p4pg-hvgv, MINI-2rh9-6m45-3f24, MINI-2xjw-q2gm-v2ch, MINI-2xx7-fqfx-c6gj, MINI-32fq-7c8m-rgrg, MINI-32m7-jcfg-prrh, MINI-33pq-33gr-mpqp, MINI-342v-7mxq-55vg, MINI-3475-p9f9-mxmq, MINI-349v-p552-r458, MINI-34w4-rr7f-3xjm, MINI-3543-j948-9mc8, MINI-35hv-rqq4-pp4x, MINI-35p9-rm5v-jgqg, MINI-377v-wc4h-m9cx, MINI-37j3-2jvr-c69r, MINI-37x2-4gvw-xw2x, MINI-38hr-mwgq-vw35, MINI-3f4g-rc95-qc55, MINI-3f9q-3vmm-qv7w, MINI-3mpj-92v2-m53p, MINI-3mwf-92xj-q8xq, MINI-3q6h-v3hr-g256, MINI-3qgc-489h-cff5, MINI-3qh7-fwpc-6ghq, MINI-3rm8-ff4p-x4v4, MINI-3vqx-3h6x-hjvh, MINI-3w3q-xhcr-fj8q, MINI-422v-69j8-vwj2, MINI-44c7-c9jx-mj37, MINI-44qh-7mmj-72pr, MINI-45jr-2cj8-3m4q, MINI-45p9-fj8j-35fp, MINI-46h4-58hc-2xpx, MINI-46r6-96h3-8jxc, MINI-4726-94r3-cx3p, MINI-4782-3fmr-48jp, MINI-47mv-g3x7-6v7h, MINI-4894-qcv3-q9fr, MINI-497j-gjmp-q66w, MINI-4c23-m2qw-rxxc, MINI-4cxc-999h-xp53, MINI-4f2c-73ww-8mr3, MINI-4jfw-qm33-6c6q, MINI-4mvf-29hq-34vq, MINI-4q5x-f643-x7j9, MINI-4v66-q4g3-3c8h, MINI-4v9j-87c7-gr85, MINI-4vhw-g86w-6r9p, MINI-4vvc-3v53-pwmj, MINI-4w7j-rx7r-vph4, MINI-4xfq-vqfv-jrgc, MINI-4xmr-f28g-7xvc, MINI-523x-gqf8-qq83, MINI-528r-gqmm-7g4w, MINI-5354-9qmc-x8m2, MINI-53qf-vwhr-qv68, MINI-54j2-qqcr-cqw9, MINI-572r-rp84-23x3, MINI-5785-vmjx-9j58, MINI-57gm-hx6m-2cp5, MINI-57rw-f2j9-wh43, MINI-58w8-6296-f3qh, MINI-59m6-v62h-8wgv, MINI-5g5r-3g7v-h33p, MINI-5gvv-vh92-qh35, MINI-5hfp-jx99-rjcr, MINI-5jfq-vxv5-rrjr, MINI-5mgq-72xm-7qxr, MINI-5pvq-36wg-q833, MINI-5pvw-qmrm-ff8m, MINI-5q2h-f496-vf5c, MINI-5q93-h647-j3wx, MINI-5vvq-gqjh-m2gv, MINI-5w28-cmx5-g7j9, MINI-5xqh-w4v4-xq3r, MINI-5xqq-c47q-f64m, MINI-62xr-52pr-fc84, MINI-6398-c5gq-cf8g, MINI-63g5-m988-w4q2, MINI-64pj-qvxx-h27v, MINI-64w9-wr8p-xh9w, MINI-65vv-829v-r73q, MINI-665r-4f5h-j34c, MINI-668j-r4f2-86mv, MINI-674h-mgm2-pwv8, MINI-675g-j8mq-cj6r, MINI-678w-hhq3-frxh, MINI-6895-jgq4-83r8, MINI-699w-5657-c95f, MINI-6cvm-v544-qvhj, MINI-6fp3-hm5c-cr4j, MINI-6g27-257m-h65x, MINI-6gp2-9p87-4mp2, MINI-6h7h-wm28-58ch, MINI-6hrw-mvj9-gghf, MINI-6hwv-xr4q-gxw9, MINI-6j8j-9c82-3xw8, MINI-6jqp-98cx-65jw, MINI-6m54-v888-628j, MINI-6p37-28w9-9x32, MINI-6pv5-w8mc-5967, MINI-6qfc-fvgm-8gqp, MINI-6rq8-mgp5-29x8, MINI-6wh8-cfh9-8wcq, MINI-6x6w-4ffv-6f4w, MINI-6x89-cg92-x4q5, MINI-6xg2-cv99-pc9x, MINI-72qx-x75f-h8c4, MINI-72xq-82f8-mgf8, MINI-734c-53gp-5crc, MINI-738g-h2q7-37cc, MINI-73xg-crrh-m9px, MINI-74mv-ff47-pw6h, MINI-77w5-4782-8c5h, MINI-7846-2xj2-fhhg, MINI-7cp2-j3q9-m4wh, MINI-7f93-phq3-62gg, MINI-7gfx-22vm-pr34, MINI-7j57-f6w7-wpq8, MINI-7j8f-2gmp-q666, MINI-7jp5-366r-7pjr, MINI-7jvw-vjj7-wg98, MINI-7p9f-ch8m-f9c2, MINI-7ph9-6mv3-rrfq, MINI-7w3w-pw68-cg8w, MINI-7w65-44h5-c3jr, MINI-7w86-grrv-vf4w, MINI-7xmg-8r7w-h484, MINI-82w6-vjxr-hwvg, MINI-8667-3qpp-xchv, MINI-874h-w2h6-97v9, MINI-87fw-hhc4-3c4f, MINI-87h6-9cmm-qqfm, MINI-87mc-hgrc-4w2q, MINI-88x2-fc8v-469p, MINI-899x-wv8m-8f69, MINI-8cjw-h2xg-j29c, MINI-8f86-q3r2-59w6, MINI-8ffc-m568-m9cj, MINI-8gxm-8749-9g89, MINI-8jc3-gv7w-p8jj, MINI-8m2h-3xqm-pq2c, MINI-8m84-wrfq-2rpm, MINI-8m9m-m9g6-xcrj, MINI-8mhw-x3mq-3mcq, MINI-8pqg-g2pc-2555, MINI-8pv7-g86g-fmq9, MINI-8qx9-jwf8-7259, MINI-8v6p-vrwr-65rg, MINI-8vvf-g4cc-rwjg, MINI-8x27-vcfp-2j2h, MINI-8xg5-95qm-v836, MINI-924x-56qf-m85x, MINI-926j-cr4w-x4cg, MINI-933m-xxwj-5ffq, MINI-94cp-pxf7-ffv8, MINI-94xq-qh7g-fqfx, MINI-963w-6q5x-2mw9, MINI-98c9-46rp-gccv, MINI-99r5-9cqx-2m2m, MINI-9fj3-79wq-865h, MINI-9fmp-225q-q5h7, MINI-9g4v-2g3w-jgpw, MINI-9gwj-x4fw-2frp, MINI-9jrv-7mhc-966v, MINI-9jwm-67jx-f3wq, MINI-9m9q-jrr7-hvx3, MINI-9p5j-w3xf-8v5q, MINI-9p9v-h26p-m4q6, MINI-9pmr-8wm9-8rxq, MINI-9q33-2rpm-jpjf, MINI-9q8h-3hmj-7m8j, MINI-9v99-8xpj-j9v3, MINI-9xv7-wj88-3wj8, MINI-c35p-2f9v-wmvh, MINI-c496-47r8-v9cv, MINI-c4xq-j9m2-486r, MINI-c6wm-7fp5-j86r, MINI-c7j3-h85p-47j6, MINI-c8gx-crwr-33m8, MINI-c8rh-fpv3-m3jp, MINI-cf5x-cr68-9pg6, MINI-cfh8-jfw5-qq43, MINI-cgxw-7gv8-r9hr, MINI-ch5x-p584-2px3, MINI-cmgx-6rx2-rfcr, MINI-cmh2-rpxg-c7m9, MINI-cp7r-3373-f4fc, MINI-cpv6-q37v-m993, MINI-cq5w-259q-h4pc, MINI-cr43-68rj-46jj, MINI-cvx2-85q3-qch8, MINI-cw5p-f8w7-h35g, MINI-cwc3-pxvq-rxfg, MINI-f5cg-ggrf-297r, MINI-f5wg-rw73-w66w, MINI-f9vv-4f63-m2g6, MINI-fc78-7hww-whw3, MINI-ffxf-frxm-j877, MINI-fggw-9pq9-p449, MINI-fjf6-9qvx-5rqp, MINI-fp22-7w3x-g22m, MINI-fv76-p95v-q7m8, MINI-fvc2-6w8m-27c8, MINI-g238-c37c-c76j, MINI-g3h4-mp73-g63r, MINI-g4mw-5qc2-3vv4, MINI-g5pq-h4f4-h428, MINI-g5r3-j6g9-3xx4, MINI-g69r-mwm4-3x6p, MINI-g8hq-28qw-cjjw, MINI-g8wj-gm4p-pmj6, MINI-gcf6-g5gc-2xf3, MINI-gcqp-35jh-9q8r, MINI-grrg-j29x-vrvm, MINI-gv6m-6q6q-g9vg, MINI-gv99-w45w-fp43, MINI-gvj6-wv24-69xq, MINI-gvmg-594p-7vh3, MINI-gww3-hhfj-gwfj, MINI-gxcf-m9mp-87jw, MINI-h25f-44px-4wmv, MINI-h36m-qvch-hqg7, MINI-h397-c883-7cqr, MINI-h496-w99h-xgff, MINI-h536-q6hv-rjfr, MINI-h6x8-mq8r-9xw2, MINI-h76p-6j86-mmxh, MINI-h7jp-j9c2-5f9c, MINI-h8x5-g4v9-x32j, MINI-h947-hfvj-w539, MINI-hg93-67vx-2hrh, MINI-hjm9-6f2h-76qv, MINI-hmmw-922f-r352, MINI-hmp6-7qm6-85cw, MINI-hmx2-2896-7vc4, MINI-hq2c-f756-wc8r, MINI-hrx7-phfx-hjm9, MINI-hv5p-grqw-5rrr, MINI-hvq2-6wjj-fmgm, MINI-hw2g-pwp2-4xjh, MINI-hx3w-pxf7-36xh, MINI-hx9g-7gjp-4mqr, MINI-hxx3-82gx-prpg, MINI-j23j-6mwp-p33c, MINI-j2fm-pqgv-gpmv, MINI-j2h7-mc9c-j67c, MINI-j3c4-xj3h-56vp, MINI-j3x2-pq33-rrvm, MINI-j42r-8qvf-p34x, MINI-j53c-9f2h-7jcv, MINI-j589-mwpc-w3h3, MINI-j6c4-vfwr-w2f3, MINI-j99x-p6h6-26jg, MINI-jf6q-gfm8-75qp, MINI-jg2x-598h-g3gh, MINI-jg8j-w754-532v, MINI-jh9m-82p7-qrrw, MINI-jr3v-g7hx-7wjm, MINI-jxx7-7899-9crc, MINI-m287-994x-2v4x, MINI-m2rx-xf9j-77mw, MINI-m62v-c9fr-x396, MINI-m64w-hh5h-r6v8, MINI-m6mf-p5gq-g7cq, MINI-m6pg-6jrp-8rgc, MINI-m7c6-j8jq-cfhh, MINI-m822-xcpv-2j92, MINI-m82x-wx7j-hh5g, MINI-m87r-7q79-4984, MINI-m937-w4rc-q2ch, MINI-m93r-pphg-5wf7, MINI-mfmw-69jc-x67m, MINI-mfv7-6g76-77w9, MINI-mh38-26vv-g829, MINI-mj37-mg9w-5h52, MINI-mm94-x5rr-3hxq, MINI-mq63-hvc7-g2gq, MINI-mr3f-9c38-v4rh, MINI-mv4r-qr4m-7g2c, MINI-mw2j-chhq-76v3, MINI-mw4j-g8j2-mjxc, MINI-p2c3-x5c5-pc5x, MINI-p35g-vxx3-m5hv, MINI-p3hf-cpcf-m99q, MINI-p3jq-7hxw-jc96, MINI-p3qx-crrx-j463, MINI-p3wv-664c-9h3r, MINI-p4wj-wjj5-5pxm, MINI-p59q-xhfj-hj6q, MINI-p6hx-v2px-877w, MINI-p737-r47j-wx49, MINI-p78c-m6c2-325p, MINI-p9fq-3r8f-m693, MINI-p9mr-vj4q-pj5r, MINI-pcj8-cw7h-mjc3, MINI-pcwj-f97p-c37q, MINI-pg4v-5hx8-3433, MINI-pg8c-mw8r-p945, MINI-pgh7-r499-g77q, MINI-ph4w-g488-rvwc, MINI-phq7-9438-7cf5, MINI-pppr-8f2w-5jhr, MINI-pr7m-794w-7337, MINI-pw9p-p9wv-8r69, MINI-pw9x-xc2w-5ph4, MINI-q253-fxqr-7h6x, MINI-q2v5-wv53-f4mr, MINI-q39p-4rcg-gmh3, MINI-q3fj-hrj8-p7cq, MINI-q3hc-vpx6-gvhx, MINI-q3m6-gfhh-2x73, MINI-q52v-4cq5-fv65, MINI-q53g-xx68-rm8p, MINI-q5h9-938f-59pj, MINI-q7p8-8qqf-jxjj, MINI-q7vg-4cwr-pcrm, MINI-q8r9-373c-qhcc, MINI-q9cg-v482-p383, MINI-qc8f-32hf-9f7v, MINI-qgx5-3c22-33jx, MINI-qhx3-rj8x-rcxp, MINI-qj57-pfrr-rcx4, MINI-qmvg-xr42-569c, MINI-qmw2-h7v3-5vh7, MINI-qp39-cw28-9qv5, MINI-qq5p-r575-6xjm, MINI-qqcw-rm36-4vjx, MINI-qw4m-xc96-vpfp, MINI-qw5q-rf7p-j7j5, MINI-qxcr-h8x9-fm4c, MINI-qxqf-jmqw-vw3c, MINI-r29r-3rpc-mh9c, MINI-r57f-9wqq-p43q, MINI-r9fc-f8g4-gmfm, MINI-r9p4-mm65-rg9c, MINI-rcxw-q5gc-4q3q, MINI-rgpc-58gr-88j7, MINI-rhfr-mm7m-xfhh, MINI-rp6v-jjc3-mvcg, MINI-rq23-q3pf-x6hh, MINI-rvx7-5r3q-68x5, MINI-v279-xr8p-wcpw, MINI-v2jx-vmjm-hr43, MINI-v2pg-vq77-r2hx, MINI-v2x8-m6pc-v42x, MINI-v4jw-9fc8-8mr9, MINI-v4wp-9mhh-jhvv, MINI-v5vx-w3wr-jvj3, MINI-v898-q993-32cm, MINI-vc89-g7mf-3xmq, MINI-vchv-xq5m-7r3w, MINI-vg23-3gpg-4p2w, MINI-vhgg-2734-9hqw, MINI-vhhg-5xjp-m4xg, MINI-vm6q-4jhq-jww8, MINI-vq86-gjvg-c5p4, MINI-vq9w-273j-g5j8, MINI-vqcj-9mcm-qv5m, MINI-vqr2-33vp-hxqf, MINI-vwgg-hq6x-cxcr, MINI-vwpv-6v45-58fv, MINI-vx4p-87x3-5fpr, MINI-vxc5-5hr4-9g5g, MINI-vxv7-mghh-xchr, MINI-w29x-r6fw-vjpv, MINI-w5cv-43w3-3w69, MINI-w5f3-fgfh-g743, MINI-w5g5-jx7w-5283, MINI-w6xw-q9wg-c3g2, MINI-w78m-q552-r34h, MINI-w996-mhrx-qv7h, MINI-wcvh-r42w-7mfg, MINI-wf3m-qhhw-9789, MINI-wg37-7jxm-c9j5, MINI-wg88-4xfr-jpmj, MINI-whf4-whjc-wjp4, MINI-wpwq-gj87-xvg8, MINI-wq4m-wwx6-64w2, MINI-wq9m-67c9-2qqp, MINI-ww2p-jjvx-j82h, MINI-ww7p-xjcq-vhfj, MINI-ww8v-w6cq-x9x6, MINI-wwcp-r9qj-jqhx, MINI-x373-6qgw-mc6f, MINI-x3qv-56q3-6jjf, MINI-x3rh-385c-j943, MINI-x43p-hm59-2gcw, MINI-x6xm-485v-865p, MINI-x75g-r6h2-m84v, MINI-x86w-q5v6-c93j, MINI-x8qx-7v5c-x539, MINI-x964-mxqr-99j3, MINI-xcmh-j89x-v4x6, MINI-xcph-52hm-xcg5, MINI-xcvc-34r8-8245, MINI-xf63-3428-4xvh, MINI-xfmv-mhqj-fqxg, MINI-xg2f-hg8p-m6w4, MINI-xgfc-5979-r8w3, MINI-xhh4-5qv9-66xg, MINI-xprv-9pgm-wh86, MINI-xq5v-xgwj-67mf, MINI-xqrp-c7wm-q4jf, MINI-xv25-3g6c-m8x6, MINI-xw8j-74p4-39v7, MINI-xxrr-q2p4-3pq2, ROOT-OS-DEBIAN-13-CVE-2025-61730, UBUNTU-CVE-2025-61730

## What is CVE-2025-61730?

CVE-2025-61730 is a medium-severity vulnerability in Golang Go, published on 28 Jan 2026. 

### Official description

During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries (for instance the Client Hello and Encrypted Extensions messages), the subsequent messages may be processed before the encryption level changes. This can cause some minor information disclosure if a network-local attacker can inject messages during the handshake.

## Which versions are affected by CVE-2025-61730?

2 open source packages ship an affected version, including golang and stdlib. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `golang` | Bitnami | All versions | 1.24.12, 1.25.6 |
| `stdlib` | Go | All versions | 1.24.12, 1.25.6 |

Products: Golang Go.

## How do I fix CVE-2025-61730?

Upgrade golang to a fixed version for your release line: 1.24.12 or 1.25.6.

## Is CVE-2025-61730 being exploited?

There is no known exploitation of CVE-2025-61730 in the wild and no public exploit code.

## Other vulnerabilities in Golang Go

- [CVE-2020-0601](https://insights.sbomify.com/CVE-2020-0601/): Microsoft Windows CryptoAPI Spoofing (high 8.1, exploited in the wild)
- [CVE-2026-27143](https://insights.sbomify.com/CVE-2026-27143/): Missing bound checks can lead to memory corruption in safe Go in cmd/compile (critical 9.8)
- [CVE-2024-24790](https://insights.sbomify.com/CVE-2024-24790/): Unexpected behavior from Is methods for IPv4-mapped IPv6 addresses in net/netip (critical 9.8)
- [CVE-2023-39320](https://insights.sbomify.com/CVE-2023-39320/): Arbitrary code execution via go.mod toolchain directive in cmd/go (critical 9.8)
- [CVE-2023-24540](https://insights.sbomify.com/CVE-2023-24540/): Improper handling of JavaScript whitespace in html/template (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-61730 and fix it if it is affected.

What it is: CVE-2025-61730 is a medium-severity vulnerability in Golang Go, published on 28 Jan 2026. 
Exploitation: There is no known exploitation of CVE-2025-61730 in the wild and no public exploit code.

Affected packages and fixed versions:
- golang (Bitnami): affected all versions; fixed in 1.24.12, 1.25.6
- stdlib (Go): affected all versions; fixed in 1.24.12, 1.25.6

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-61730/ (Markdown: https://insights.sbomify.com/CVE-2025-61730/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-61730
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-61730
- OSV: https://osv.dev/vulnerability/CVE-2025-61730

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-61730/
Summaries are generated and may contain mistakes; the official description above is the record.