# python-jwt 1.5.3+ds1-1ubuntu0.1+esm3: python-jwt 1.5.3+ds1-1ubuntu0.1+esm3 for Ubuntu 18.04.6 LTS (bionic)

python-jwt 1.5.3+ds1-1ubuntu0.1+esm3, released October 27, 2026, fixes 4 CVEs in python-jwt. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-bionic-python-jwt-1.5.3-ds1-1ubuntu0.1-esm3
- Platform: Linux
- Released: Oct 27, 2026
- Priority: Urgent (Closes CVE-2026-102268, rated Critical)
- CVEs: 4, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [python-jwt](https://patchblox.com/security/data/product/linux/python-jwt.md) | Ubuntu 18.04.6 LTS (bionic) | 1.5.3+ds1-1ubuntu0.1+esm3 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-102268](https://patchblox.com/security/data/cve/CVE-2026-102268.md) | Urgent | PyJWT: Asymmetric-PEM detection bypass: whitespace/line-ending-mutated public keys skip the HS/asymmetric confusion guard | 9.1 | 0.0024 |  |
| [CVE-2026-102272](https://patchblox.com/security/data/cve/CVE-2026-102272.md) | High | PyJWT BOM Bypass | 9.1 | 0.0022 |  |
| [CVE-2026-102271](https://patchblox.com/security/data/cve/CVE-2026-102271.md) | High | PyJWT: Public keys in DER form are accepted as HMAC secrets, bypassing the CVE-2022-29217 guard | 9.1 | 0.0022 |  |
| [CVE-2026-102273](https://patchblox.com/security/data/cve/CVE-2026-102273.md) | High | PyJWT accepts public JWK containers as HMAC secrets | 7.4 | 0.0018 |  |

---

Data as of 2026-11-11T13:47:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.