diff --git a/backend/src/ee/services/certificate-est/certificate-est-service.ts b/backend/src/ee/services/certificate-est/certificate-est-service.ts
index e39c834f3c..627cc58c6b 100644
--- a/backend/src/ee/services/certificate-est/certificate-est-service.ts
+++ b/backend/src/ee/services/certificate-est/certificate-est-service.ts
@@ -244,10 +244,6 @@ export const certificateEstServiceFactory = ({
 
     const certificates = extractX509CertFromChain(caCertChain).map((cert) => new x509.X509Certificate(cert));
 
-    if (!certificates) {
-      throw new BadRequestError({ message: "Failed to parse certificate chain" });
-    }
-
     const caCertificate = new x509.X509Certificate(caCert);
     return convertRawCertsToPkcs7([caCertificate.rawData, ...certificates.map((cert) => cert.rawData)]);
   };
diff --git a/backend/src/ee/services/ssh-certificate-template/ssh-certificate-template-validators.ts b/backend/src/ee/services/ssh-certificate-template/ssh-certificate-template-validators.ts
index 8f747a3370..48d7939707 100644
--- a/backend/src/ee/services/ssh-certificate-template/ssh-certificate-template-validators.ts
+++ b/backend/src/ee/services/ssh-certificate-template/ssh-certificate-template-validators.ts
@@ -10,7 +10,7 @@ export const isValidUserPattern = (value: string): boolean => {
   if (value === "*") return true; // Handle wildcard separately
 
   // Simpler, more specific pattern for usernames
-  const userRegex = /^[a-z_][a-z0-9_-]$/;
+  const userRegex = /^[a-z_][a-z0-9_-]*$/i;
   return userRegex.test(value);
 };
 
diff --git a/backend/src/lib/axios/digest-auth.ts b/backend/src/lib/axios/digest-auth.ts
index 1731e57497..449c471fdd 100644
--- a/backend/src/lib/axios/digest-auth.ts
+++ b/backend/src/lib/axios/digest-auth.ts
@@ -28,8 +28,8 @@ export const createDigestAuthRequestInterceptor = (
       nc += 1;
       const nonceCount = nc.toString(16).padStart(8, "0");
       const cnonce = crypto.randomBytes(24).toString("hex");
-      const realm = authDetails.find((el) => el[0].toLowerCase().indexOf("realm") > -1)?.[1].replaceAll('"', "");
-      const nonce = authDetails.find((el) => el[0].toLowerCase().indexOf("nonce") > -1)?.[1].replaceAll('"', "");
+      const realm = authDetails.find((el) => el[0].toLowerCase().indexOf("realm") > -1)?.[1]?.replaceAll('"', "") || "";
+      const nonce = authDetails.find((el) => el[0].toLowerCase().indexOf("nonce") > -1)?.[1]?.replaceAll('"', "") || "";
       const ha1 = crypto.createHash("md5").update(`${username}:${realm}:${password}`).digest("hex");
       const path = opts.url;
 
diff --git a/backend/src/lib/validator/validate-string.test.ts b/backend/src/lib/validator/validate-string.test.ts
index 953f6e7575..73e1728966 100644
--- a/backend/src/lib/validator/validate-string.test.ts
+++ b/backend/src/lib/validator/validate-string.test.ts
@@ -15,7 +15,7 @@ describe("validate-string", () => {
 
   test("Check special characters", () => {
     expect(characterValidator([CharacterType.AlphaNumeric, CharacterType.Hyphen])("Hello-World")).toBeTruthy();
-    expect(characterValidator([CharacterType.AlphaNumeric, CharacterType.Hyphen])("Hello-World")).toBeTruthy();
+    expect(characterValidator([CharacterType.AlphaNumeric, CharacterType.Plus])("Hello+World")).toBeTruthy();
     expect(characterValidator([CharacterType.AlphaNumeric, CharacterType.Underscore])("Hello_World")).toBeTruthy();
     expect(characterValidator([CharacterType.AlphaNumeric, CharacterType.Colon])("Hello:World")).toBeTruthy();
     expect(characterValidator([CharacterType.AlphaNumeric, CharacterType.Underscore])("Hello World")).toBeFalsy();
diff --git a/backend/src/services/secret/secret-fns.ts b/backend/src/services/secret/secret-fns.ts
index ca106c71f3..2574dc13ec 100644
--- a/backend/src/services/secret/secret-fns.ts
+++ b/backend/src/services/secret/secret-fns.ts
@@ -207,7 +207,7 @@ export const recursivelyGetSecretPaths = ({
 const formatMultiValueEnv = (val?: string) => {
   if (!val) return "";
   if (!val.match("\n")) return val;
-  return `"${val.replaceAll("/n", "\\n")}"`;
+  return `"${val.replaceAll("\n", "\\n")}"`;
 };
 
 type TInterpolateSecretArg = {